What is the function of the engine intake manifold?
2 Answers
The function of the engine intake manifold is to maintain driving safety. It is located between the throttle valve and the engine intake valve, serving as the intake pipeline from the carburetor or throttle body to the cylinder head intake port. The primary role of the engine intake manifold is to distribute the air-fuel mixture from the carburetor or throttle body to each cylinder's intake port. Requirements for plastic materials used in engine intake manifolds: 1. High-temperature resistance; 2. High strength; 3. Dimensional stability; 4. Chemical stability; 5. Thermal aging stability. Advantages of plastic engine intake manifolds: 1. Lower cost and lighter weight; 2. Improved hot-start performance, enhancing engine power and torque; 3. Faster increase in gas temperature; 4. Reduced air flow resistance, improving engine performance.
As someone who has been repairing cars for over a decade, I know the intake manifold is the heart of an engine's air distribution. It evenly divides airflow from the air filter to each cylinder, ensuring consistent combustion. If the manifold leaks or gets clogged, the engine will struggle to start, idle roughly, or even experience a surge in fuel consumption. Modern designs use plastic materials to reduce weight and integrate with fuel injection systems to optimize mixture. Routine maintenance should check seals and connections—cracks can cause air leaks, affecting overall efficiency. Regular cleaning of the intake system also prevents issues and extends component lifespan.
