For an engine with N cylinders, each having the bore diameter, D and depth, L, the engine displacement can be written as: This formula is based on the cylinder volume formula. How to use the fuel efficiency calculator? Listed below are the BSFC ranges for average efficiency Gas, E85 & Methanol engines at theirpeak hp output. Here is an explanation why: if you were to take both cars of type A and want to cover 100 kilometers with each of them, you would need not 200 / 2.5 = 80 liters, but 125 liters of petrol (100 liters for the first car and 25 liters for the second). Horsepower BSFC. This is because an engine can run at a specific rpm at no load, half load, full oad, etc. following a course of hard acceleration, turns and braking, can be driven to a crap MPG. The long length and twist and turns in the fuel line mean resistanceto flow is much greater. Calculate fuel economy in automobiles in US or Metric units. Connect and share knowledge within a single location that is structured and easy to search. The best answers are voted up and rise to the top, Not the answer you're looking for? Yes! By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Wir teilen auch Informationen ber Ihre Nutzung unserer Website mit unseren Social Media-, Werbe- und Analysepartnern. The French will see that for type A the average is 0.625 while for type B it is 0.5 and will conclude that type B is more efficient than type A, as the car will use less fuel to cover the same distance. Use this fuel calculator to easily calculate the fuel consumption of a vehicle: car, bus, truck, etc. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. Fill up your tank with fuel before you start a long trip or the block of time you want to track. :), @Dario If you only have the percentage of fuel tank, then require the user to input the size of the fuel tank when they setup a profile for their vehicle. Learn more about Stack Overflow the company, and our products. PTO on. Scroll down and read through our guide to understand better. Our online calculators, converters, randomizers, and content are provided "as is", free of charge, and without any warranty or guarantee. Measurement of actual carbon dioxide mass emitted from a diesel engine. When planning your fuel delivery system we recommend first starting with an estimate of the fuel consumption your engine will require. MPG stands for miles per gallon and, as this name suggests, it's the number of miles that a car can cover on a gallon of fuel. Boatdiesel Calculators The size of the engine was insufficient to say "big = bad, small = good." Calculate your actual miles or kilometers, Ending Odometer Reading minus Starting Odometer Reading equals miles or kilometers traveled, End - Start = Miles or Kilometers traveled, Miles driven gallons used = miles per gallon =, Kilometers driven liters used = kilometers per liter = km/l. Calculating Boat Fuel Consumption | Boating Mag Answers to frequently asked questions about octane. People used to use cubic centimetres for engine size, but "litres" is easier to say and the number is the same anyway (albeit with a decimal in a different spot). of cylinder as 2 and stroke length as 150 mm. Fuel makes power. The point is that the air-fuel mix is not all fuel. in.). mpg or your km/l yourself. Unexpected uint64 behaviour 0xFFFF'FFFF'FFFF'FFFF - 1 = 0? Interestingly, if you'll notice the term: G = gasoline. Air Conditioner Brackets; Alternator Bracket Components; Alternator Brackets; . Naturally aspirated LSX: 800 0.45. When you calculate miles/gallon (mpg) or kilometers/liter (km/l) you are calculating fuel economy in terms of distance per unit volume or distance/volume. Use this form to help you figure out your engine specs. when you check the fuel level, if it went up, the car got refueled. Fuel efficiency, or fuel economy, can be a tricky concept. With regular driving the Air/Fuel ratio is kept constant at 14.7:1. And from obd2 i can't read mileage (for me km percurred)only the on board car computer can manage Km (distance). or i'm wrong? people talk online about "gallons" but not whether it's "US Liquid Gallon" or "Imperial"). The Corrado could touch 30 mpg under the same conditions, but only with constant attention to never having fun. The fuel efficiency calculator estimates gas mileage based on the number of kilometers covered and the average fuel consumption of your car. Download our fuel consumption quick reference sheet to easily find the fuel consumption and recommended line size for your engine based upon your horsepower and fuel type. Engines & Components . Fuel Consumption Calculator - liter/km Fuel Consumption Chart Use the chart below to estimate fuel efficiency. Download and print scalable Fuel Consumption Chart! Step 2: Input the no. This way you will only need to multiply your horsepower by that figure to arriveat your GPH rate, without the need for converting from lbs to gallons after. in.). Air/Fuel Ratio: The AFR defines the ratio of the amount of air consumed by the engine compared to the amount of fuel. This website is administered by Oak Ridge National Laboratory for the U.S. Department of Energy and the U.S. Environmental Protection Agency. Even though the fuel consumption required at your engine's peak horsepowerwill be effected by several variablessuch as throttle position, RPM, and aspirationtype these calculations can get you close. How to Calculate Approximate Fuel Consumption from Engine Specs Suppose we're looking for optimum fuel consumption. Diesel Fuel Tank & Piping Sizing 100% Load. I present as evidence exhibit A: the comparison between the BMW M3 and the Toyota Prius on the Top Gear test track. Even with the hypothetical 20 MPH, it becomes a question of apples vs. oranges. Compare to a Vittese with a straight 6 of larger displacement, they're going to be comfortable at two different speeds. Are there any canonical examples of the Prime Directive being broken that aren't shown on screen? Gas rate = price per gallon divided by miles per gallon = price per mile. 5) Need to know actual gas left in tank (don't have a way of figuring this out) so the app can use this and the above calcs to let you know if you need to fill up. OP is a software developer clearly (see profile). get the odometer reading and subtract it from the odometer reading at last refueling, that's your distance driven since the last refueling. Find and Compare Cars - Fuel Economy How Much Gas Does Idling Waste? | Verizon Connect In this application the stock line would not be able to flow much more then 60 GPH without significantpressure flow restriction accumulating. How read/calculate the amount of consumed fuel estimated for a travel? The hot car calculator shows how fast a car's interior heats up during a summer day. In such a case the French researcher is correct, as the average is misleading the US researcher. Km percorsi = percurred km Often referred to as 'engine capacity,' this is the measurement of the total volume of the cylinders in the engine. What does that GPH rate mean for my Filter? Will higher octane fuel improve gas mileage? How can "mpg" be high under low engine load? Fuel Consumption Calculator To determine the fuel consumption of your Arrow engine and compare the cost of using other fuels, please fill in the input values below and click the "Calculate" button. The friction is measured in FMEP (friction mean effective pressure) which gives you the pressure required in the pistons to keep the engine spinning at a constant rate. Then determine the line size and pump to support that flow. However, the actual figure will vary dramatically. If you are using a quality fuel filter like our, your filter should be out flowingthe fittings and fuel lines on your car by a considerable margin. The arithmetic average is not invariant to monotonic transformations, so this is an issue when averaging performance of two or more vehicles, or when averaging the performance of a single vehicle in different situations, e.g. Engine size is commonly expressed in cubic centimeters (cc) and liters (L). Just ask the user what the fuel tank size is when they create a profile. Step 1: Identify the number of cylinders and input the appropriate value as N = 4. Example: To determine the deck height required for a 2332cc engine with a compression ratio of 9.5:1, and cylinder heads with a combustion . What are the advantages of running a power tool on 240 V vs 120 V? How To Select A Turbo Part 2: Calculations - Garrett Motion Engine Fuel Injector Calculator | MAPerformance Engine Calculator. per HP | .40 lb. What you tried is the cylinder volume times revolutions per minute. if the fuel level went down, the car has been driven. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. mpg US, What's the cheapest way to buy out a sibling's share of our parents house if I have no cash and want to pay less than the appraised value? Idling Fuel Consumption Calculator (Exact and Estimated) You want to be sure that your componentscan delivererthe fuel needed to supply your thirsty engine. And i can read type of fuel, engine coolant temp, rpm and speed. But who is right in the above example? You can also get the mileage through the OBD2 connector. fuel consumption in l/100km (liters per 100 kilometers). Has depleted uranium been considered for radiation shielding in crewed spacecraft beyond LEO? A narrowband O2 sensor tells the ECU if it is over or under stoichiometric mixing and it will adjust instantly. of the trip), and update this figure every time you take a reading. How to Calculate Approximate Fuel Consumption from Engine Specs. All rights reserved. Most people would argue that when we care about how much fuel we would need to cover a given distance. To calculate Fuel Consumption for a 400 hp Gas engine with a BSFC of .50 lbs/hp/hr: To convert this lbs/hr to a more meaningfulgallons per hour we use the conversion rate from lbs to gallons which is 6.25 lbs to 1 gallon of gas. We are occasionally asked, what fuel flow do I need to support my application? Step 2: Input the no. lb = pound(s). Engine size explained | What do engine sizes mean? | Jamjar What is Wario dropping at the end of Super Mario Land 2 and why? In our testing this filter in isolation flows close to 100 GPH with around 1/2 psi resistance. A Prius howling along at 80 MPH with unknown hybrid system setup (no regenerative braking? Toyota Land Cruiser Prado, the King of the road! GVWR = gross vehicle weight rating. And the axes of the plot are speed and load. Listed below are the BSFC ranges for average efficiency Gas, E85 & Methanol engines at theirpeak hp output. https://www.calculatorsoup.com/calculators/tools/gas-mileage-calculator.php. So I thought that in one cycle 1.3L of fuel is burned, but this is not the case so can someone please explain how they are related. What is it costing you in fuel per kilometer? Despite having the same horsepower goal, notice how each . As others have implied, this mitigates all the "tire pressure/driving style/coasting/parked running" details and becomes a simple question of * calculated GPS distance/fuel % delta*. We can help you advertise its mpg. Engine Displacement Calculator - Capacity of an Engine Engine fuel consumption is something that is measured through experiments and recorded as a function of speed (RPM) and load (torque). But the only problem about level fuel is the type. For further information, visit the cylinder volume calculator! For type B both researchers will correctly estimate that 100 liters will be required for the same task. Can someone explain why this point is giving me 8.3V? Hybrids, Diesels, and Alternative Fuel Cars, Tips for Hybrids, Plug-in Hybrids, and Electric Vehicles, Plug-in and Fuel Cell Vehicles Purchased in 2023 or After, Pre-Owned Plug-in and Fuel Cell Vehicles Purchased in 2023 or After, Plug-in and Fuel Cell Vehicles Purchased Before 2023. Calculate vehicle Calculation (Litres used X 100) km travelled = Litres per 100km. Find and compare the fuel economy, fuel costs, and safety ratings of new and used cars and trucks. I have not been a "developer" for decades, but if you have access to the phone API for the GPS data, most of your hard work will be done. Our engine size calculator is used to determine the engine size or displacement of an engine based on its specifications. as an example lets see how the filter fitting size and line size relates to flow. 3) Need to know how far you get with certain RPMs for a certain quantity of gas. This is measured in cubic centimetres (cc). Its important to note that these calculations are only rough estimates and actual fuel consumption can vary greatly based on the specific vehicle and driving conditions. Fuel consumption is based on full rated horsepower at operating RPM used Arrow Engine Model HP Ratings Then determine the line size and pump to support that flow. Similarly, for km. Gal = gallon(s). Ever wondered what does cc or cubic inch written alongside an engine means or how to find cc of an engine? instantaneous Fuel F = 1 /(14.75 * 6.26) * MAF * t/60 instantaneous, Legenda translations: What is it costing you in gas per mile? The difference there being the Prius was being driven flat out, way past what it was designed to do efficiently whereas the M3 was cruising along because it has the power and gearing to go much faster. Has depleted uranium been considered for radiation shielding in crewed spacecraft beyond LEO? Fuel economy is the amount of fuel / gas required to move a car / SUV over a distance.Fuel efficiency is the efficiency of converting energy contained in a carrier (car or SUV) gas /fuel to kinetic energy or work.Fuel / gas efficiency can mean the output one gets for a unit amount of gas input such as "miles per gallon" or "liters per 100 kilometers" for an car / SUV (sometimes called fuel . Or only hands write from user the the level of inputed fuel? Compare Cars Side-by-Side - Fuel Economy You would need to sample many cars - perhaps crowd source it. How to calculate the force required to lift this deck? It's recommended for chatter outside answering the question to take it to a chat room, whether the Pitstop, or creating your own. The Absolute Fuel Consumption Value Fuel cost and CO2 calculator The Relative Fuel Consumption Per Distance Fuel consumption in liters per 100 kilometers The formula for calculating relative fuel consumption Relative fuel consumption in liter per 100 km calculator Online calculator - planning fuel consumption Fuel consumption in miles per gallon Sorry can you explain what is MPG? Larger engines generally produce more power, but may also be less fuel efficient than smaller engines. https://www.calculatorsoup.com - Online Calculators. km/l (kilometers per liter) or I'm not sure how this gives the OP information about the PID they're requesting? Engine fuel consumption is something that is measured through experiments and recorded as a function of speed (RPM) and load (torque). MPG = distance (km) x average gas consumption (litres) / 100 km However, it's much easier to use the MPG calculator. Air conditioning on. It's possible to do that with the obd2 connected with the phone? Total Distance & Motor Vehicle Fuel Consumption to - SensorsONE The stroke length is the distance traveled by the piston inside a cylinder. MPG Calculator: What's your car's True MPG? | What Car? It only takes a minute to sign up. About fuel level, yes you can see the % of fuel with PID 015E if i'm right. Why in the Sierpiski Triangle is this set being used as the example for the OSC and not a more "natural"? How to determine injector size for custom engine? We answer the common and not so common questions that come up in our daily work as a designer and manufacturer of engine oiling and cooling solutions. Fuel is measured in pounds instead of gallons. So if a larger engine needs more air (more swept volume) per cycle then yes it will require more fuel. For example, a typical Formula One race car engine is of 1600 cc or 1.6 L capacity. Save my name, email, and website in this browser for the next time I comment. Compare that to the long lengthof stock 3/8 fuel line running to and from the filter. Answers to frequently asked questions about octane. The above BSFC number tell us that our gasoline engine requires .50 lb of fuel per horsepower per hour. For example I drive a Ford Ka with a: If you are continuing your calculations from the last time the app was reset, add this amount to the previous fuel tally (but don't overwrite the previous fuel tally). Would you channel pros have recommended sending private IM to OP instead? How do rollercoaster designers calculate the ideal curve? Motor Vehicle Maintenance & Repair Stack Exchange is a question and answer site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles. Said another way, we know for each horsepower our gas engine creates we will need .50 lbs of fuel per hour. miles kilometers (km) Fuel Efficiency. Let's set the unit for the engine displacement to cu in. A few notes here A/F ration on cars can actually vary a lot 12:1ish for maximum power to 18:1sih in lean cruise modes. Livello carburante = Tank level fuel These things affect fuel efficiency, yes, but they are not things you can calculate. Indeed, this gives the per minute volume of air-fuel mix entering each cylinder of the engine. To calculate Fuel Consumption for a 400 hp Gas engine with a BSFC of .50 lbs/hp/hr: 400 hp x .50 = 200 lbs/hr To convert this lbs/hr to a more meaningful gallons per hour we use t he conversion rate from lbs to gallons which is 6.25 lbs to 1 gallon of gas 200 lbs/hr / 6.25 lbs/gal = 32 gph And that's it! This may be helpful for expense, tax deductions or lease-related calculations; in some situations you will be given or allowed a cost per unit mile or kilometerto cover the expense of using a vehicle. How is Fuel Consumption Calculated? - Transpoco of cylinder as 2 and stroke length as 150 mm. For one heavy truck, the cost of idle fuel waste averages about $8,730. Vehicles produce about half of the greenhouse gases from a typical U.S. household. Step 4: The engine cubic inch calculator will now return the engine displacement value, such that: V = 4 * 250 * * 50 / 4 = 1,963,495 mm 119.82 cu. PTO = power take-off. Min. Note that the #of camshafts, #of valves and #of journal bearings also affect friction. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. Note that it is associated with a unique speed and load combination. See our full terms of service. Understanding that is key for the correct interpretation and comparison of fuel consumption estimates such as those produced by this calculator. With the space travel calculator, you can plan your journey to another star system or even another galaxy. Also subtract the current odometer reading from the last time the app was reset, that is your trip distance driven. Now that you've mastered calculating an engine's volume, why not learn how to find the force associated with a piston? Gas consumption when engine braking [motorcycle], Understanding the probability of measurement w.r.t. To learn more, see our tips on writing great answers. The engine size and fuel consumption calculator works by using the following formula: Engine Size = (bore x stroke x cylinders x 0.7854) / 1000 Fuel Consumption = (fuel flow x 100) / distance The bore, stroke, and number of cylinders are inputs provided by the user and are used to calculate the engine size. Is this plug ok to install an AC condensor? FMEP times volume = Power per cycle needed to fight friction. You must have read about a 2 liter engine or a 100 cc motorcycle. Fuel Cost Calculator It is called Break Specific Fuel Consumption (BSFC) and it may be written in grams per kilowatt-hours of work done by the engine. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Interesting idea, probably should have patented it before putting it in the public domain, can see this being useful to GPS peeps/MAP peeps. If it were me I would look at average driving habits (50/60kph in town + 100/120 highway) and get average RPMS at these speeds, and actual measured gas consumption per engine size. What risks are you taking when "signing in with Google"? Fill up your tank with fuel before you start a long trip or the block of time you want to track. Note: These gph flow rates may seem high when compared to your daily driver on the highway, but remember these are not averages, these are flow at loaded peak output. You can add, edit, and remove vehicles at any time. A minor scale definition: am I missing something? How read/calculate the amount of consumed fuel estimated for a travel? To calculate engine size, you can use the formula: Engine Size= Math.PI / 4 * bore * bore * stroke * cylinders reffers to engine displacment Where: bore is the diameter of the cylinder in inches (or millimeters) stroke is the distance traveled by the piston in inches (or millimeters) cylinders is the number of cylinders in the engine To calculate engine size, you can use the formula: To calculate fuel consumption, you need to consider several factors, including: A commonly used formula to estimate fuel consumption is: Fuel flow can be estimated based on engine size, engine efficiency, driving conditions, and other factors. wanna understand how those calculations are made, mechanics.stackexchange.com/questions/21434/, New blog post from our CEO Prashanth: Community is the future of AI, Improving the copy in the close modal and post notices - 2023 edition. Is this plug ok to install an AC condensor? Next choose a qualityfuel filter to match your line size that uses high flow high filtration media like our CM filters. At a steady 55, driven gently, the Golf delivered 35-40 mpg in California's Central Valley. Engineering Stack Exchange is a question and answer site for professionals and students of engineering. This is how to calculate your fitting and line size was the determining factor for flow. Find a fuel efficient vehicle that meets your needs. What differentiates living as mere roommates from living in a marriage-like relationship? For example, if you notice that your usually spend $0.15 per mile (15 cents per mile), then if you know you will be travelling for 200 miles, you can calculate the cost of the trip by multiplying 200mi x $0.15 = $30 for a 200 mile trip. So was giving my answer from perspective of developer to developer. BSFC is a great tool to quickly examine the relationship between fuel flow and horsepower. What are the advantages of running a power tool on 240 V vs 120 V. @Dean, engines are sized in terms of the air volume to which fuel is added primarily because air is the dominant factor. That is unless there is already published data on this. Note that most of the mechanical losses come from the friction between the piston and the bore. Instead, just get how much total fuel has been used (either from the last fillup or from the last app reset), just by: Don't worry about rpms, uphills, downhills, traffic, headwind, tailwind, sidewind, nowind, rain, snow, hot, dry, good tires, bad tires, stroke length, bore size, spark plug gap, or how long since the driver's last eaten meatloaf. Motor Vehicle Maintenance & Repair Stack Exchange is a question and answer site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles. The resulting fuel economy results were: That's the comparison between a 1.5 liter 4 cylinder vs. a 4 liter V8 and the bigger engine was significantly more efficient. Fuel consumption is calculated by dividing the amount of fuel used during a certain distance traveled by the distance traveled. This website is administered by Oak Ridge National Laboratory for the U.S. Department of Energy and the U.S. Environmental Protection Agency. Calculating Fuel Demands And Injector Sizing With EFI University For example a Triumph Herald with inline 4 cylinder, 949 cc motor, versus the same car with an 1149 cc motor. Engine Size And Fuel Consumption Calculator AE NOx = (0.031 lb NO x /bhp-hr) x 250 bhp x 2,080 hr/y = 16,120 lb NO x /yr An alternative method is used if fuel consumption is provided. We can help you calculate and track your fuel economy. If we give each car of type A a liter of fuel, they will cover 5 kilometers combined while giving each car of type B a liter of fuel, they will cover only 4 km combined. In short, if you're trying to compare efficiency between two engines, size is not the deciding factor. Thanks for contributing an answer to Engineering Stack Exchange! If you are resetting your calculations every fillup, use this number. Fuel Consumption. Regarding the small differences in the numbers between the methods, that is a result in rounding differences. Size for 12 Hour Run Time = Fuel Consumption x 12 hours x 1.1 Min. Once you know the capacity of the engine, you can also calculate its compression ratio. Speed = Distance/Time, so Distance = Speed x Time. i get time monitoring using phone from start travel to lecture consuming and calculate the percurred km. anyway with this method the result is obsolete if car is stopped because 0km/h = no consuming :D :D (and it's wrong)maybe i can set some standard value if the car is stopped but the motor is on.

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