Performance benefits of Jacobs’ VVA
- Lower emissions
- Optimized fuel consumption
- Improved transient response
- After treatment temperature management
- Individual cylinder control
- Ease of integration
- Cycle-to-cycle response time
- Variable compression ratio
- Infinite braking modulation
- Mechanical valve life with no oil
How Jacobs VVA works
Variable Valve Actuation allows real-time adjustments to valve opening and closing, maintaining accurate control of valve motion. By creating a hydraulic link between the cam and the valve, VVA precisely tunes the engine across its operating range. This allows the engine designer to extract superior performance from the engine.
VVA is one of an engineer’s most powerful and cost-effective tools for accomplishing vehicle system performance goals: meeting tightening fuel economy standards while maintaining emissions and lowering overall engine systems costs. Elegant in its simplicity, Jacobs’ VVA provides a means to achieve desired valve movement, integrating with minimal impact to engine overhead designs.
Early or late intake valve closing reduces fuel consumption, optimizes compression ratio versus load, improves transient response and start-up, and improves emissions by keeping the aftertreatment system hot during low load operation.