Reliability, durability

Producing several thousands engines per day implies producing highly robust, reliable and long-life engines. But VCR engines are not only more complex than conventional engines, they are also high-loaded on high mileage: this constitutes a double challenge.

High loads essentially impact on cylinder durability: the higher the average load, the higher the cylinder wear and distortion and associate negative consequences on blow-by, noise and oil consumption (see: Downsizing, mechanical resistance).

Other challenges induced by high loads on high mileage are related to engine hydrodynamic bearings for which a precise and rigid geometrical environment is required (rigid crankshaft, rigid engine block).

Conclusion

Mass-production of robust, reliable and long-life VCR engines is subjected to implementation of technical solution to compensate for high loads on high mileages.

(see: The MCE-5 technology response to VCR engines’ reliability and durability requirements)