How is variable injection timing achieved?

How is variable injection timing achieved?

Variable injection timing or VIT is the term used to define a fuel injection pump which alters the timing of the start of fuel injection. With jerk type injection pump this can be done by following methods: By altering the position of the barrel with respect to the plunger. Using a fuel pump with two plungers.

What is variable injection timing?

The Variable Injection Timing (VIT) function of a marine diesel engine comes into play during load dependent adjustment of the combustion pressure. By controlling the injection timing of the fuel in the fuel delivery pump and advancing the fuel pump injection timing, VIT increases the maximum pressure in the engine.

What would happen if you advanced the injection timing?

The advanced injection timing produced highest exhaust temperatures with appreciable reduction in carbon monoxide (CO) and carbon dioxide (CO 2) exhaust emissions. The ignition delay was reduced with the advanced timing and the engine ran smoothly.

What are the types of injection fuel pump?

Know Your Vehicle: The 4 Types Of Diesel Fuel Pumps Common rail fuel injection pump. An electronically controlled diesel fuel supply system, this pump was developed to meet the strict 21st century exhaust gas regulations. Distributor (rotary) fuel injection pump. In-line fuel injection pump. Distributor injection pump.

What is the injection timing?

What is Injection Timing Injection timing is the timing of when fuel is injected into the cylinder , which alters when the combustion takes place. The time of when fuel is injected can be altered to be injected at different points in time.

What is a diesel injection pump?

Injection pump for a 12-cylinder diesel engine. An Injection Pump is the device that pumps diesel (as the fuel) into the cylinders of a diesel engine. Traditionally, the injection pump is driven indirectly from the crankshaft by gears, chains or a toothed belt (often the timing belt) that also drives the camshaft.