What happens if the exhaust brake fails?
1 Answers
If the exhaust brake fails, the vehicle will be unable to maintain stability, and its speed cannot be effectively reduced, increasing the risk of danger. The exhaust brake, also known as the exhaust retarder, is an auxiliary braking system and cannot replace the service brake. A control valve is installed on the engine's exhaust pipe, and closing this valve increases the pressure in the exhaust stroke, generating braking force through the resulting negative pressure. Notes: 1. Usage of the exhaust brake: When the exhaust brake is engaged, the accelerator pedal should be at zero position, and the fuel injector stops spraying fuel. If the accelerator pedal or clutch pedal is pressed, the exhaust brake will automatically disengage to prevent engine stalling when stopping and to avoid exhaust brake activation during fuel injection. 2. Situations where the exhaust brake should not be used: It is best not to use the exhaust brake on icy, snowy, or slippery roads, as there is a risk of wheel slip or skidding. 3. Engine exhaust brake: The braking power of the engine exhaust brake depends on the engine speed. To ensure optimal braking performance, it is recommended to select an appropriate gear when using the exhaust brake on long downhill slopes, keeping the engine speed between 1600-2400 rpm.
