Crank Drive
Crank Drive

The crank mechanism is the core of every internal combustion engine and has multiple effects on the entire drive.

Meta offers various innovative technologies around the crank drive, which are continuously developed and optimized.

CRE

The Meta CRE-System basically is an active storage for mechanical kinetic energy. Using the CRE-System, the high fluctuation torques excited by the gas forces are reduced by more than 90 % directly at the crankshaft - especially at low speeds. This innovation replaces the conventional flywheel and gives a smooth run of the entire drive train. Compared to conventional technologies, this also includes the crankshaft and all associated accessories and engine components.

Our CRE system is a key technology for comfortable power trains - especially if you want to achieve strong downsized engines with less cylinder numbers.

VCR

The thermodynamic efficiency of internal combustion engines is largely determined by the compression ratio. A system that controls the variable compression ratio can significantly increase efficiency throughout the engine map, especially on turbocharged engines.

With our Meta VCR-System, the effective conrod length, and thus the compression ratio, can be adjusted continuously during engine operation, via an eccentric connecting rod bearing and a mechanical linkage attached to the engine block. This compact and intelligent design allows it to integrate the Meta VCR-System with little modification effort into almost any engine. The Meta VCR-System is optimal to increase the efficiency of modern internal combustion engines.

AB

The technology of Adaptive Bearing (AB) developed by Meta combines a roller bearing with a friction bearing, and thus unifies the advantages of both technologies. Due to the patented arrangement, the bearings cannot be overloaded and therefore can be used in each engine.

This technology is particularly suitable to reduce the crank drive friction of internal combustion engines.

At low engine load operating points, the engine friction can be reduced up to 40 %. This has a significant effect on fuel consumption and emissions.

With Adaptive Bearing, fuel consumption and emissions can be reduced up to 3.5 % in the NEDC.