Engine Brake
Eaton's Decompression Engine Braking technology for medium- and heavy-duty commercial vehicle applications delivers high braking power and reduces the Total Cost of Ownership (TCO) for truck owners.
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 engagement ensures full braking power within one engine cycle
- Brake lift is realized on a single exhaust valve, resulting in a lower load on the system and higher braking power
- System is modular and controls the cylinder banks independently, allowing activation of only partial braking power if necessary, enabling more effective braking system usage
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.
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