Definitions for jake brake
This page provides all possible meanings and translations of the word jake brake
Especially on trucks, an engine compression brake that closes the valves in an engine in order to slow the vehicle; an engine retarder.
Origin: From JakeBrake brand compression brakes. Though a brand name, this term is often used to refer to the device in general.
Compression release engine brake
A compression release engine brake, frequently called a Jake brake or Jacobs brake, is an engine braking mechanism installed on some diesel engines. When activated, it opens exhaust valves in the cylinders after the compression cycle, releasing the compressed air trapped in the cylinders, and slowing the vehicle. Although Jake brake properly refers to the Jacobs brand of engine brakes, the term has become a genericized trademark and is often used to refer to engine brakes or compression release engine brakes in general, especially on large vehicles or heavy equipment.
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