The MPU, crank positioning sensor and the cam positioning sensor all perform what function?

The MPU, crank positioning sensor and the cam positioning sensor all perform what function?

• A. Sense the engine speed during startup
• B. Provide timing reference
• C. Control fuel injection
• D. Monitor oil pressure

Answer: (C)

These parts work together to feed timing information to the engine control system so it can manage fuel delivery. The MPU is the brain that decides when and for how long fuel should be injected. The crank positioning sensor tells the MPU the crankshaft’s position and rotation speed, while the cam positioning sensor indicates which cylinder is on its intake/exhaust stroke. With both signals, the MPU can time each injector pulse precisely and control the injection duration, ensuring proper combustion. In other words, they enable the fuel injection process by providing the timing data the ECU uses to drive injectors. Oil pressure monitoring isn’t related to injection timing, and while you can infer engine speed from these signals, their primary role is supplying the timing data that enables fuel injection control.

These parts work together to feed timing information to the engine control system so it can manage fuel delivery. The MPU is the brain that decides when and for how long fuel should be injected. The crank positioning sensor tells the MPU the crankshaft’s position and rotation speed, while the cam positioning sensor indicates which cylinder is on its intake/exhaust stroke. With both signals, the MPU can time each injector pulse precisely and control the injection duration, ensuring proper combustion. In other words, they enable the fuel injection process by providing the timing data the ECU uses to drive injectors.

Oil pressure monitoring isn’t related to injection timing, and while you can infer engine speed from these signals, their primary role is supplying the timing data that enables fuel injection control.