| 摘要 |
This invention automatically shifts the automobile from DRIVE to NEUTRAL when the gas accelerator pedal is fully released. This procedure not only maximizes energy input from gravity on downgrades, but also helps conserve the kinetic energy of moving vehicle in at least three ways. Firstly, rotating and reciprocating friction of the engine is minimized by bringing the engine to idle when power input from the engine is not needed. Secondly, energy losses from pumping lubricating oil and coolant at much higher pressures throughout the engine during high-speed operation are reduced. Thirdly, and most significantly, the compression braking effect of an internal combustion engine at low throttle settings—whereby kinetic energy from the moving vehicle is converted to heat during each energy-consuming compressing stroke—is eliminated. |
