What is the Engine Brake
What is the Engine Brake?
Engine brake, helps your car slow down by increasing the engine speed by reducing the gears when you press the brakes when you want to slow down the vehicle.
The Function of the Throttle in the Engine Brake
Downshifting; gasoline cars have a throttle and thanks to this you accelerate. With your acceleration, this throttle opens. The throttle valve closes when you release the gas. At this time, the gear is reduced to increase the engine speed. So the engine wants to get air in. But since the throttle valve is closed, it cannot draw air in, and a vacuum effect occurs in the intake manifold. With this effect, it also begins to slow down the car, as it limits the movement of the pistons. It is more likely that this method will show its effect at the upper cycles. Since there is no throttle valve in diesels compared to gasoline ones, the engine brake effect is less. But manufacturers put a structure like a throttle valve on the exhaust side and limit the movements of the pistons with increasing pressure, not with the vacuum effect, and the engine brakes are made again.
Is it Harmful to Brake the Engine?
On the contrary, this process is beneficial. You can extend the life of your brake pads and increase your fuel economy. When braking the engine, the foot should be slowly removed from the clutch when downshifting. If it is pulled out at once, the vehicle will pile forward. Due to this, it will both strain the mechanical parts and disrupt the comfort. You need to hold it at the grip point and slowly raise the revolution. This system is the same for each gear.
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