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Engine Brake

Eaton's decompression engine braking technology for medium- and heavy-duty diesel engines delivers high braking power and reduces the total cost of ownership (TCO) for truck owners.

Eaton offers rocker arm-based 1 stroke, 1.5 stroke, and 2 stroke systems for overhead cam and cam in block engine architectures. 

The compression release engine brake provides several advantages to the commercial vehicle truck owner:

  • Reduces brake and tire wear
  • Avoids overheating and fading of primary brakes
  • Reduces or eliminates the need for a driveline retarder
Engine Brake

Core features

  • Fast response: activation and deactivation within one engine revolution
  • Minimized load on the system with maximum braking performance: engine brake on one single valve
  • Tight tolerance control ensures high consistency of valve lift

Benefits: Brake Power

  • Full range of engine braking power solutions including bleeder brake, 4-stroke and 2-stroke braking
  • Reduces or eliminates need for driveline retarder
  • Reduces wear and replacement interval of primary friction brakes
  • Enables engine down-speeding and/or downsizing
  • Improves freight efficiency
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Benefits: Flexible Design

  • Compact packaging
  • Can be combined with Hydraulic Lash Adjuster (HLA)
  • Used for exhaust gas thermal management and automatic
    gear up-shifting
  • Part of broader commercial engine valve action solutions: 
    • Early Exhaust Valve Opening (EEVO)
    • Late Intake Valve closing (LIVC)
    • Cylinder Deactivation (CDA)   
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Working Principle of Decompression Engine Brake

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