Heavy Duty Equipment Technician Red Seal Exam Prep · Question
What is the primary function of the camshaft in a diesel engine?
The camshaft has lobes that precisely push on lifters, pushrods, and rocker arms to open and close the intake and exhaust valves at the correct timing relative
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Question: What is the primary function of the camshaft in a diesel engine?
Answer options: ✅ To open and close the intake and exhaust valves
- To convert linear piston motion to rotary motion
- To deliver fuel to the injectors
- To generate electrical power for the engine
Correct answer: To open and close the intake and exhaust valves
Explanation: The camshaft has lobes that precisely push on lifters, pushrods, and rocker arms to open and close the intake and exhaust valves at the correct timing relative to crankshaft rotation, allowing for fresh air intake and exhaust gas expulsion.
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