Influence of intake throttle opening on intake flow

The throttle opening is mainly adjusted by the computer board according to the air intake.

When throttle opening decreases, excess air coefficient decreases, pumping torque loss increases, effective thermal efficiency decreases and fuel consumption increases. When the throttle opening is 20%, the increase rate of fuel consumption rate at low speed and small load can reach 365,438+0.5%. The increase rate of fuel consumption rate at high speed and heavy load is 14%.

The throttle opening sensor is a device for detecting the engine state. Its main function is to detect whether the engine is in idle or load condition, acceleration or deceleration condition.