Originally Posted by tdiller
Jake is a brand of exhaust brake
Not the same at all.
An exhaust brake
is a means of slowing a diesel engine by closing off the exhaust path from the engine, causing the exhaust gases to be compressed in the exhaust manifold, and in the cylinder.
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.
Motor Homes, having mufflers, is why they don't sound like semi's when Jake brake applied