An electric motor, on the other hand, exhibits maximum torque at standstill and is well-suited to complement the engine's torque deficiency at low RPMs. The larger engine, however, has more power than needed for steady speed cruising. The main principle behind this system is the decoupling of the power supplied by the engine (or other primary source) from the power demanded by the driver.Ī combustion engine's torque output is minimal at lower RPMs and, in a conventional vehicle, a larger engine is necessary for acceptable acceleration from standstill. They incorporate power-split devices allowing for power paths from the engine to the wheels that can be either mechanical or electrical. " Power-split hybrid or series-parallel hybrid are parallel hybrids. Used when required according to wheel slippage, in reverse motion and during regeneration of electricity into the HiHy battery. Connects to sun gear in the middle of the power-split device. Can act as a motor to control engine only on very light cruise as well as deceleration in B mode. Small electric motor/generator (MG1): 146 hp/109 kW 12,500 rpm.Large electric motor/generator (MG2): 165 hp/123 4,500 rpm, 246 ft-lb 1-1500 rpm, connects to ring gear on the outside of the power-split device through the sun gear of another planetary gear set, the speed-reduction planetary gear set whose carrier set of gears is fixed and ring gear connects to the ring gear of the power-split device.Gasoline engine: 208 hp 5600 rpm, 212 fit-lb 4,400 rpm, connects to planetary-gears carrier between the sun gear and the ring gear of the power-split device.Communications about HiHy Plug-In Conversion.Roper Highlander Hybrid Plug-In-Supply Conversion Roper Highlander Hybrid (HiHy) Plug-In-Supply Conversion
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