Four Strokes, Two Methods. The steps are outwardly the same: intake, compression, combustion and exhaust. The difference is in the details. On the intake, gas engines pull in air and fuel, while diesel takes only air. During compression, the piston moves up, compressing the chamber contents (air and fuel in gas, air only in diesel). Diesel engines work differently than gasoline engines, although the role of the fuel injectors remains basically the same. Diesel engines don't use a throttle. Instead, when you step on the accelerator, more fuel is pumped to the injectors, and that is what speeds the engine up. Diesel engines have used direct injection right from the start. The engines are classified as two stroke engine and four stroke engines. Engines are generally directly coupled to the generator for developing power. In diesel engines, air admitted into the cylinder is compressed. At the end of compression stroke, fuel is injected. The fuel is burned and the burning gases expand and do work on the piston. Shift hours will vary depending on the specific service center’s hours. Generally, diesel mechanics will be working standard business hours any of the seven days of the week. For mobile diesel mechanics, work hours might include evenings and nights. These mechanics are often on call 24/7 to assist with roadside breakdowns.
3. Plug your numbers into the formula CR = (Vsw + Vcl) / Vcl. Now that you know the swept volume and clearance volume, simply insert those numbers into the formula and solve it. Add the swept volume and cylinder volume together first. Then, divide the result by the cylinder volume to find the compression ratio.
2-stroke engine work consume little more fuel. Due to less number of parts two stroke engine are lighter in weight. 2-stroke engine has the power stroke then 4-stroke engine and as such develop more horsepower. For send more air in 2-stroke engine supercharger are used to that engine develop sufficient power. A 2-stroke engine crankshaft has a
Watch this animation and you'll see that a car engine makes its power by endlessly repeating a series of four steps (called strokes): Intake: The piston (green) is pulled down inside the cylinder (gray) by the momentum of the crankshaft (gray wheel at the bottom).

A diesel-electric locomotive with Price’s engine was completed in 1924 and placed in service for switching purposes in New York City. The success of this locomotive resulted in orders from railroads, factories, and open-pit mines. The engine used in most of these installations was a six-cylinder, 25-cm (10-inch) bore, 30-cm (12-inch) stroke

Diesel, on the other hand, will not ignite with a simple spark. The ignition for diesel will take place only at very high pressure. This gives diesel engines the name compression-ignition or CI engines. The diesel cycle is named after the German inventor Rudolf Diesel. He proposed a thermodynamic cycle that explained the working of a diesel engine.
Engines burn fuel to release energy and produce motion. Basically, fuel enters the engine through an injector. The spark plug then ignites the fuel to release energy. This energy turns pistons in the engine, which makes the crankshaft turn. The energy then transfers to the car powertrain, which spins the wheels for motion.
A four-stroke engine refers to each distinct stroke made by one piston. While it may sound like a piston only has two moves — up and down — there’s a lot more going on with the position of the valves and in the overall process itself. 1. Intake. The piston begins at “top dead center” with little space between it and the two valves. .
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    • how does a diesel engine work step by step