The design and matching of the intake manifold assembly has a crucial impact on the power, economy and emission performance of the engine. The shape and size of the intake manifold affect the intake efficiency and torque characteristics of the engine. A short, straight intake manifold is good for intake efficiency at high RPM, while a long, curved intake manifold is good for torque output at low RPM. The cross-sectional area of the intake manifold will also affect the intake efficiency. Larger cross-sectional area is conducive to improving the intake efficiency, but it will also increase the intake resistance
The working principle of the intake manifold is based on the engine suction process. After the air is filtered by the air filter, it flows through the air flowmeter and into the intake manifold. When the piston moves down, a vacuum is created in the cylinder, allowing air to be drawn into the cylinder. The intake manifold distributes air to the intakes of the individual cylinders, ensuring that the mixture of air and fuel enters each cylinder evenly, thereby increasing engine efficiency and power
