Engine Brake Solenoid
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An engine brake solenoid is an electrically operated valve commonly used in heavy vehicles like trucks and buses to enhance braking force. It is a vital component of engine braking systems that utilize the vehicle's engine for deceleration.
In larger vehicles, the need for superior stopping power drives the use of engine brakes controlled by solenoid valves. Brake solenoids are activated when the brake pedal is engaged. Two solenoids work in tandem—one for the front 1, 2, and 3 cylinders and the other for the rear 4, 5, and 6 cylinders. These solenoids, operating with oil pressure, influence small cylinders to maintain valve openness within the engine.
As the engine's pistons ascend during compression strokes, the solenoids activate. These actions align with three settings. The first engages only the front solenoid, utilizing the front three cylinders for braking. The second activates only the rear solenoids, involving the rear cylinders. The third simultaneously activates both solenoids, engaging all cylinders, front and rear. An essential component, the VGT turbo actuator, also plays a role.
The VGT turbo actuator functions as an additional brake, regulating exhaust flow to aid deceleration. This collaborative interplay of engine brake solenoids and the VGT turbo actuator enhances deceleration control, particularly in heavy vehicles.[1]
References[edit]
- ↑ "What is an engine brake solenoid? - Genuine Car Information". 2023-08-19. Retrieved 2023-08-30.
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