zero impact on existing engine architecture
fully variable, high speed actuation
8% CO₂ reduction in the WLTC at low costA product developed with passion.
A fully variable VCR crankshaft
An important advantage of the Gomecsys VCR system is the ease of integration in an existing engine configuration.
The Gomecsys VCR crankshaft uses split eccentrics which are assembled on each crankpin of a one part crankshaft.
The split eccentrics are assembled on the crankpin with special clamps, called “dog bones”.
The eccentrics are all driven by a dedicated gear mechanism. The gear mechanism has to fulfill two functions.
1 – Drive all eccentrics at half the crankshaft speed.
2 - Adjust the position of the eccentrics to achieve to optimum CR position depending on engine load and speed. 90 deg. for max. CR and -70 deg. for min. CR.
zero impact on existing engine architecture
fully variable, high speed actuation
8% CO₂ reduction in the WLTC at low cost
minimum additional production costs
very low load on VCR gears
no additional friction
true 4-stroke cycle
more power at low compression ratio
no gear noise
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 782767.