What causes the spark in a diesel engine?
What causes the spark in a diesel engine?
A diesel engine takes air, compresses it, and then injects fuel into the compressed air. The heat of the compressed air ignites the fuel spontaneously. A diesel engine does not contain a spark plug. The higher the compression ratio, the more power generated.
Does a diesel need spark?
While compression ignition means that diesels don’t require spark plugs, they can come fitted with components called glow plugs. While glow plugs don’t ignite the fuel, they are useful when an engine, or the environment the vehicle is in, is very cold.
Is there a diesel with spark plugs?
A spark plug has no use with diesel fuel because there is no need to ‘light’ the diesel fuel. Instead, the glow plug only heats the combustion chamber.”
Why do diesels not need spark plugs?
Diesel engines, unlike gasoline engines, do not use spark plugs to induce combustion. Instead, they rely solely on compression to raise the temperature of the air to a point where the diesel combusts spontaneously when introduced to the hot, high pressure air. The glow plug solves this.
Do older diesels have spark plugs?
Neither a modern diesel engine nor older model diesel engines have or had spark plugs. They’re little heaters that warm the compressed air in the cylinder, assisting compression heating and assisting ignition when a cold engine starts for the first time.
What is the firing order of a 6 cylinder diesel engine?
The firing order of this type of engine is configured as 1-4-5-2-3-6 which means that the firing or spark ignition will occur at every 120 degree of the crankshaft rotation.
What is the stoichiometric ratio for diesel?
14.5:1
The reason for this is the working principle of a diesel engine: controlling load not through air mass (which is always in excess) but through fuel mass (injection time). Remember that a stoichiometric equivalence factor (λ = 1.00) means an air fuel ratio of 14.7:1 for gasoline engines and 14.5:1 for diesel engines.
How do you adjust idle on 6.2 diesel?
To adjust the idle, on the driver side of the injection pump there is a flat blade screw with a spring on the throttle shaft assembly, turn cockwise to incease and visa-versa.
Where is the injection pump on a 6.2 Diesel?
Take the air cleaner off and look for an octopus in the middle front of engine. Fuel lines goes into the back centre and then lines for the injectors come off the back around the edge sort of. Yes any injection pump that begings with DB2 can be put on.
