Intake manifold flap control problem
Swirl damper manages airflow for better combustion and engine performance.
Costs
Every car issue can be caused by different things. Here are the most common ones
max.
Potential Causes
- Spare parts
- Work time
max.
Potential Causes
- Spare parts
- Work time
max.
Potential Causes
- Spare parts
- Work time
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Discussions
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Details
Probability
Based on the values and symptoms you have entered, a crude estimation of the probability of this problem can be made
HIGH
Typical consequences
If this defect is detected, it may lead to the following problems:
- Engine damage
- Failure of the exhaust emission test (Failure to pass the exhaust emission test)
Functionality of swirl flaps
The swirl flap adjuster on the intake manifold continuously regulates the swirl flaps and is monitored by a sensor. When the swirl flaps are closed, more fresh air is drawn in through the swirl duct, which increases air turbulence. In four-valve cylinder heads, one intake port is used as the "filling port" and the other as the "swirl port".
The filling duct can be partially closed by a swirl flap in part-load operation, which distributes the air volume asymmetrically. This promotes greater turbulence, improves air-fuel mixing at low engine speeds and increases the degree of filling of the combustion chamber at high engine speeds, which has a positive effect on fuel consumption.