Which ECU-controlled feature adjusts the intake air path into the engine?
Variable intake manifold
The question asks which electronically controlled feature actually changes the path or length of the air travelling into the engine.
The variable intake manifold uses ECU-operated flaps or valves that switch the intake runner length between long and short paths.
At low engine speed the longer path improves torque, while at high speed the shorter path improves breathing and power.
The evaporative emission container only stores fuel vapours, idle speed control only sets idle rpm, and air:fuel ratio is a mixture value, not an air path.
Hence, the answer is Variable intake manifold.
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Supercharging in marine engines is done to:
Which filter is used in the intake manifold of an engine?
- A system that forces fresh air into the exhaust ports or catalytic converter to reduce HC and CO emissions is called:
Which of the following is tightened with wing nuts?
Which of the following filters is fitted on the intake manifold?
