HISTORY

Many of the major automotive manufacturers have introduced automobiles with mechanical CVTs. All of these vehicles have utilized a mechanically varying linkage to change the effective gear ratio between the input and the output.

However, the mechanical CVTs require significant forces to produce the continuously vary the transfer ratio between the input and output. There is only one source for these forces, and that is the enigne, which drives the hydraulc pumps to produce the foreces required to vary the CVT transfer ratios. These mechanical and hydraulic forces required to control the CVT reduce the overall CVT system efficiency.

The external mechanical and hydraulic forces required to change transfer ratios, as well as other mechanical losses, combine in mechanical CVTs to produce a net efficiency gain that is similar to that produced by a manual transmission.

Mechanical CVT technology is based on externally produced forces for shifting or sliding components in the form of belts with varying pulley diameters or roller balls and toroids. These external forces are produced by the vehicle's engine in the form of hydraulic forces. The need for these 'parasitic' forces greatly reduce the overall efficiency of the mechanical CVT. The net result of the mechanical CVT has little or no efficiency gain when compared to a manual, dual clutch, or normal automatic transmission.

Mechanical CVTs require external power to perform the speed ratio conversion. This demands energy consumption and cost. CVET enables control of its transfer ratios electronically, without the need for external forces. All efficiency benefits are captured in energy savings and reduced waste product from the exhaust. CVET technology supports the environment.

CVET controls the vehicle speed. While the gasoline engine or electric motor always operates at an optimal constant speed, CVET allows the conversion of the engine or electric motor speed to variable output speed while maintaining the engine or electric motor operation at the peak and optimal point efficiency of operation. CVET provides controlled output speed and torque conversion at the most efficient point of engine operation. CVET accomplishes this electronically, maximizing efficiency that helps reduce carbon emissions in the environment.

Unlike mechanical CVTs, no external power is required to perform the speed conversion from the engine to the wheels. All efficiency benefits are fully captured in energy savings along with reduced waste product from the exhaust.

CVET Transmission is superior than Automatic Transmissions

• Smaller
• Lighter
• Easier to organize
• Simple and effective structure
• Lower cost

CVET transmissions work with all types of engines and can replace all legacy transmissions. CVET works with any vehicle power source and transmission types.