How to Control the Intake Brake of Weichai Engine?

1 Answers
AylaMarie
07/30/25 9:40am
Here are the control methods for the intake brake of Weichai engine: 1. First gear control: Press the brake switch X1-65, the voltage at the control terminal X1-38 of the intake brake relay changes from 24V to 0V, the first gear intake brake relay engages, and the first gear intake brake solenoid valve starts working. 2. Second gear control: Press the brake switch X1-56, the voltage at the control terminal X1-72 of the intake brake relay changes from 24V to 0V, the second gear intake brake relay engages, and the second gear intake brake solenoid valve starts working. Here are the extended prerequisites for using the intake brake: 1. Condition one: The engine speed is above 1000 rpm. The engine water temperature is above 75°C. The transmission is in gear (neutral signal is 0, not in neutral state). 2. Condition two: The clutch pedal is released (throttle opening is 0). The throttle pedal is released (throttle opening is 0).
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