Science of Cars

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How Diesel Car Engines Work

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The Diesel engine was created by Rudolf Diesel in response to the fuel inefficiency of gasoline engines. At its core, the way a Diesel engine operates is nearly identical to the machinations of the gasoline engine – the primary purpose is to use internal combustion to convert the chemical energy of fuel into mechanical energy that can drive the movement of the pistons whose up and down movements drive the crankshaft and create the rotating motion required to move the car forward.

Most motor vehicles contain a four stroke diesel engine: first, the intake valves open allowing air into the cylinder and forcing the initial downward motion of the pistons; second, the pistons move back up and compress the air; third, as the piston reaches the top, the fuel is injected and the air, having been heated by the act of compression, ignites the fuel and the combustion forces the piston back down; fourth, the piston moves back to the top, pushing out the exhaust created from the combustion as opposed to a gasoline engine that uses a spark from a sparkplug to ignite the fuel air mixture.

Diesel engines are more fuel efficient than their gasoline counterparts, resulting in lower fuel consumption; a common margin is 40% more miles per gallon for an efficient turbo diesel. Diesel engines also produce very little carbon monoxide as they burn the fuel in excess air even at full load.

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How Ethanol Car Engines Work

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Ethanol cars work in a way very similar to normal gasoline cars, and are a great viable alternative fuel option because of current high gas prices. The only real difference is that ethanol car engines are able to utilize the biofuel ethanol instead of oil based gasoline.

Ethanol fuel itself is extracted from plants such as corn or sugarcane, and refined into an alcohol. This alcohol is suitable to be used as a biofuel in cars and other vehicles. Most hybrid automobile engines that use ethanol can also use gasoline, and are also called “flex-fuel” engines. The ethanol is injected into the engine in the same way as a non-hybrid automobile engine. Though ethanol gives slightly less miles per gallon than gasoline, it doesn’t create as much air pollution when it is burned.

The similarities between ethanol “flex-fuel” engines and standard engines make ethanol cars cheaper than most alternative or hybrid vehicles, because they are built in much the same way as a regular engine. Ethanol is actually cheaper in some cases than gasoline, and thus a hybrid that runs on ethanol can be less expensive to operate than a gasoline based vehicle.

Most standard automobiles can even run on a 10% mixture of ethanol in gasoline. Many gas stations around the world offer ethanol as an alternative to gasoline, and in some countries cars are required to run on ethanol.

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Car Engines And The Way They Work

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Gamgee developed the Zeromotor, a perpetual motion machine of the second kind. Gas prices are up, causing many drivers to look for ways to improve fuel efficiency. Although there are practical steps you can take to increase gas mileage, the Federal Trade Commission (FTC) suggests that you proceed with caution when you consider buying automotive devices or oil and gas additives based on gas-saving claims.


Oil is pumped under pressure to all the moving parts of the engine by an oil pump. The oil pump is mounted at the bottom of the engine in the oil pan and is connected by a gear to either the crankshaft or the camshaft. Oil drops on the parking space?


Additionally, the Ford 2.3L engine has a light weight and is pretty compact for a car engine. This will allow racers to have a better front balance in their racing vehicle. Additionally, you probably don’t want anything that might be leaking from your car to get onto your food.


Adding marinade is one thing, but soaking your steak in washer fluid probably doesn’t taste too good. Additionally, the device is available with Linux development tools, for third parties wishing to develop applications for it. DeMaggio said, “We’ll give you all the tools.


Car engines are much more efficient: they waste less energy and put more of it to work. What’s so clever about them is that they burn fuel in closed containers, capturing most of the heat energy the fuel releases, and turning it into mechanical energy that can drive the car along. Car engine cooking will change the way you take road trips, forever. As I’ve stated in the past, I love to get extra use out of the products I buy.


Combustion of fuel draws its own air. The rising combustion gases drive the rotational mechanism. Combustion leak testers are basically a turkey baster filled with PH liquid, with a non-return valve at the bottom. To use one, run your engine for a few minutes until its warm (not hot) then turn it off.


Diesel engines are one form and gas turbine engines are another. See also the articles on HEMI engines , rotary engines and two-stroke engines . Diesel automobiles at one point were very popular vehicles but due to many issues they have been largely avoided by purchasers in countries such as America. They got a reputation for being very noisy, unreliable and polluting resulting in the decline of sales since the 1980s.


Oil breaks down due to the high operating temperature of the engine. As it breaks down, it is not able to lubricate the engine as well as it should. Oil drops showing up after you move your car out of its parking space is something to worry about though.

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