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A piston is where the engines power comes from
I work with internal gas combustion engines however i know a little about diesel aswell
Inside the cylinder fuel is drawn in and the piston moves up compressing the fuel. it keeps compressing until the pressure (according to common gas laws) increaces the temperature and the fuel ignites, the piston is forced downward (power stroke) turning the crank which moves the engine forward and the exhaust escapes through a valve and the processes is repeated
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How is a gasoline engine different from a diesel engine?
A gas engine ignites gasoline in the piston chamber with a spark from a spark plug. The expanding gas then pushes the piston out and the motor moves forward. A diesel engine uses diesel fuel, different from gasoline, and the fuel is compressed by the piston until it ignites, sending the piston out. There are no spark plugs in a a diesel engine. Some diesel engines will have "glow plugs" which are used to initially start the engine but once started, compressing the fuel is the method of ignition.
What are the different types of piston engine according to cylinder head classification?
diesel engine
What is the difference in a diesel engine piston and a gas engine piston?
Currently, diesel engine pistons are typically made of steel - aluminum was used previously, as it had better heat sink properties, but metallurgy has improved steel enough to the point where it holds up fine now. The highest ring on current production diesel engines is at the top of the piston now - this was in response to emissions requirement. Gas engine pistons are flat at the top, as it is a spark which ignites the fuel/air mixture; diesel engine pistons often have the 'Mexican hat' at the top of the piston, as they ignite through compression.
What can cause diesel fuel to mix with engine oil in a mack truck?
Worn piston rings.
What are the reasons for decreasing mobil oil in diesel engine?
Because of Ring burnt, engine heat-up or loose piston in sleave.
What does a komatsu 6D125 engine mean?
It means that it is a six cylinder naturally-aspirated diesel engine with 125 mm piston bore
What is function of a piston in a diesel engine?
The piston has the same function whether diesel or petrol. The piston is forced down the cylinder when the petrol mixture ignites and expands. That in turn presses on the connecting rod which in turn pushes on the crankshaft. The crankshaft changes the up and down movement of the piston into a rotational movement which makes the car go.
How is a diesel engine different from other internal combustion engines?
Its a compression engine, as opposed to a spark driven combustion. No spark plugs! To start the engine, the piston is forced up (by a starter), it compresses the (heated) fuel in the piston which then ignites (under pressure) forcing the piston back down and initiating the engine to turn over.
What happens when liner is broken in a diesel engine?
depending on if the engine has been ran for long after the liner broke, it can normally be replaced, depending on the damage you may need new piston, valves piston rings etc
The difference between a single-acting and an opposed piston engine?
An opposed piston engine is a single-acting engine. All modern gasoline and diesel engines are single-acting. The single-acting engine receives force on one side of the piston, and relies on the engine to push the piston back the other way. On an opposed engine like a Continental or Lycoming, the piston on the other side of the engine will do the pushing. A double-acting engine, which almost always means a steam engine, receives force on both sides of the piston. Since they run horizontally, when the piston is to the right the engine will send steam to push it to the left and when it's to the left the engine will send steam to push it to the right. A slide valve decides which side of the piston the steam will go to.
What is mean effective pressure of diesel engine?
It is the theoretical constant pressure acting on the piston during one power stroke.
What is the difference between inlet valve timing in a diesel engine and a petrol engine?
In diesel engine ,air alone without any fuel is drawn by the falling piston during inlet stroke. In petrol engine, the mixture of air and fuel is drawn in by the falling piston during inlet stroke. There is no difference in the act of actually setting the timing. Inlet valves open slightly before the piston reaches top dead centre, by how much depends on the manufacturers specifications.
