Electronic Throttle Body

Electronic Throttle Body (ETB) is a critical actuator in modern automotive engine management systems, commonly known as “drive-by-wire” throttle. Positioned between the air filter and intake manifold, it precisely regulates the airflow into the engine, determining power output and combustion efficiency. Core Structure • Housing & Throttle Plate: Lightweight aluminum alloy housing with a butterfly valve plate to control intake cross-section。 • Drive Motor: DC servo/stepper motor with gear reduction for precise valve rotation。 • Position Sensor: Dual redundant Hall effect/magnetoresistive sensors with 0.1° resolution and ±0.5° accuracy。 • ECU: Processes pedal and engine data, outputs PWM signals for closed-loop control, response time 80–120ms。 • Return Spring: Forces plate to safe idle position on power failure。