How is engine speed controlled on a vehicle?
96 and new vehicles use air idle control valve, idle air control sensor, or something to the nature
How the speed of a vehicle is related to engine speed and how tha vehicle speed is affected by the engine torque and gear ratio?
A smaller number as a gear ratio means more speed. Higher ratios have higher torque and less speed. The size of the engine just determines hp and tq for that engine unless it is upgraded. The gear ratio and engine determine the vehicles top speed and acceleration. More torque means more power therefore more acceleration.
A vital component of any diesel engine system is the governor, which limits the speed of the engine by controlling the rate of fuel delivery. *Diesel engine speed is controlled solely by the amount of fuel injected into the engine by the injectors. Because a diesel engine is not self-speed-limiting, it requires not only a means of changing engine speed (throttle control) but also a means of maintaining the desired speed. The governor provides the…
The tachometer measures the number of revolutions the engine makes in a minute. This indirectly equates to the speed of the vehicle. Depending on the gear that the vehicle is in, you could determine speed with a tachometer. To determine your speed, you would need to know the gearing of the rear end as well as the circumference of the wheels.
There is no "Governor Chip" all engine functions are controlled by a "ECU" or "Engine Control Unit" There are 2 Governors in the ECU a Rev Governor and a Speed Governor. The rev governor prevents you from Over revving the engine at park or neutral (It prevents you from going over redline in gear) which will DESTROY your transmission pump. The speed governor is in place to prevent your vehicle from exceeding a speed at…