What should injection timing be?
A good starting point is to have the timing at around 270 degrees at 1000 RPM and increasing by 20 degrees every 500 RPM until about 4000-5000 RPM where the injection timing is less critical (depending on injector sizing).
What is the purpose of injection timing?
What Is Injection Timing? Injection timing, also called spill timing, is the moment when diesel fuel enters the cylinder during the combustion phase. When you adjust the timing, you can alter when the engine injects the fuel, therefore changing when combustion occurs.
What is diesel injection timing?
Start of injection (SOI) or injection timing is the time at which injection of fuel into the combustion chamber begins. It is usually expressed in crank angle degrees (CAD) relative to TDC of the compression stroke.
How does the timing of the camshaft affect the engine?
This action opens the valves. Similarly, once the camshaft rotation releases the pressure applied on the valves, it allows the springs located on the valves to close them once again. Since camshaft timing impacts engine performance, it is essential that you keep an eye on it.
How does valve timing work in an engine?
The crankshaft is connected to the rod and piston, and the camshaft’s lobes trigger valve lift events. Thus, with the information from the crankshaft and camshaft position sensors, the ECU can learn how fast the engine is rotating and the relative positions of the piston and the intake and exhaust valves.
What does the timing chain do on a car?
Your timing chain serves as a link between your crankshaft and camshaft to assure the two are in time. A gear on the crankshaft drives the camshaft (s) that activates valves during the proper piston stroke. When the chain stretches out it can affect the ignition and valve timing.
How are the camshafts connected to the crankshaft?
These camshafts are made of hardened iron or steel and are connected to the crankshaft via timing belts, chains, or gears. Since modern gasoline engines incorporate the four-stroke cycle, this means that the camshafts rotate once for every two crankshaft rotations. To reinforce this point, consider the intake stroke of an engine.