EVT Mode 1

WARNING: This page is about a different car, the 2010 GMC Sierra and 2010 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

After the engine is started the system operates in EVT Mode 1 which is used for low speed urban driving conditions. Utilizing an input split configuration, engine simultaneously drives motor 1 to both generate electricity to charge the hybrid battery and provide power through the mechanical gearing in the transmission to the wheels. The energy generated by drive motor 1 is stored in the battery while drive motor 2 draws battery energy to provide additional output torque. Depending on driving conditions the engine will operate in either 4 or 8-cylinder mode to optimize fuel consumption while maintaining output power requirements. Combining EVT operation with Active Fuel Management (AFM) allows the engine to operate in 4-cylinder mode over a wider range of operating conditions than a non-hybrid vehicle. EVT and AFM are synergistic technologies that enable greater fuel economy when combined together than when either technology is used independently. Drive motor 2 provides output power to augment the engine in 4-cylinder mode and drive motor 1 can be used to provide torque smoothing.