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 types in comparison
1.5 and 2 stroke
- Enables one additional brake cycle per cam revolution
- Enhances maximum braking power throughout the engine speed range up to 75% vs. conventional single stroke engine brake. Can replace retarder on some applications
- Compatible with SOHC and DOHC engine architectures
Learn more about our 1.5 stroke engine brake
Eaton 1.5 stroke engine brake system delivers 50% higher braking power at low speed vs conventional engine braking. This is achieved by having one additional compression release event per engine cycle. A deactivating rocker arm in combination with an engine brake rocker arm disables the regular exhaust valve motion allowing a second valve opening at top dead center.
Dedicated rocker
- Single stroke braking
- Dedicated brake cam lobe and rocker
- Maximum braking power for single stroke systems
- Maximum flexibility in cam design
- Compatible with SOHC and DOHC engine architectures
- Higher space claimed compared to Integrated Rocker solution
Integrated rocker with reset
- Single stroke braking
- One cam lobe and one rocker for exhaust and brake lift
- Re-set during lift: valve closing profile will not change in brake mode
- Automatic lash adjustment on brake valve lift
- Similar braking performance to Dedicated Rocker
- Better packaging than Dedicated Rocker
- Compatible with cam in block and SOHC architectures
Integrated rocker without reset
- Single stroke braking
- One cam lobe and one rocker for exhaust and brake lift
- Closing timing delayed in brake mode
- Easier packaging than Dedicated Rocker and Integrated Rocker with reset
- Compatible with cam in block and SOHC architectures
核心功能
- 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
Learn more about our 1.5 stroke engine brake
Eaton 1.5 stroke engine brake system delivers 50% higher braking power at low speed vs conventional engine braking. This is achieved by having one additional compression release event per engine cycle. A deactivating rocker arm in combination with an engine brake rocker arm disables the regular exhaust valve motion allowing a second valve opening at top dead center.
Learn more about Eaton’s reset function on the integrated engine brake rocker.
