Translations:Engine & Compression Brake/2/en: Difference between revisions

Revision as of 15:34, 28 February 2025

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Message definition (Engine & Compression Brake)

Disengaging {{pll|Throttle|throttle}} of an engine naturally leads it to drop RPM. However, because the {{pll|Mechanical Transmission|mechanical transmission}} has such a firm link between the engine and the wheels, slowing down of the engine causes the vehicle to slow down too, if the {{pll|Reverser|reverser}} is set in the direction of travel. Selecting a gear where RPM is high gets the most out of an engine brake, and if a train is light enough it will slow down from mere disengagement of the throttle.

To engage the engine brake, the driver needs to disengage the throttle and have the reverser set in the direction the vehicle is moving. The losses in the engine cause it to slow down over time, and even more so at higher RPM. With a mechanical transmission, this slowing down directly affects the vehicle speed too. Therefore, selecting a gear where RPM is the highest, within safe limits, will get the most out of the engine brake, and if a train is light enough it will slow down from mere disengagement of the throttle.