首页> 外国专利> Measuring specific fuel consumption and torque of motor vehicle IC engine - setting engine speed at full throttle by braking then idling while measuring average consumption and crankshaft acceleration

Measuring specific fuel consumption and torque of motor vehicle IC engine - setting engine speed at full throttle by braking then idling while measuring average consumption and crankshaft acceleration

机译:测量汽车IC发动机的特定燃料消耗和扭矩-通过制动然后空转来设置全油门发动机转速,同时测量平均燃料消耗和曲轴加速度

摘要

The measuring method involves a preparatory phase in which the vehicle is brought to a speed in a defined gear with the engine speed above a defined value. The engine is held at the speed for a few seconds with full throttle whilst the average consumption is measured against crankshaft angle. The engine speed is reduced by a defined amount by braking under full throttle. The brakes are released and the speed increased to one the same value above the defined value whilst measuring crankshaft acceleration and average consumption against crankshaft rotation. The crankshaft angular deceleration is measured in an ideal phase. The torque and specific consumption are derived from the measured values. ADVANTAGE - Specific fuel consumption and effective torque are measured without removing engine or using special test stand.
机译:该测量方法涉及准备阶段,在该阶段中,使发动机以限定的档位达到速度,并且发动机转速高于限定值。发动机在全节气门的情况下保持几秒钟的速度,同时根据曲轴角度测量平均消耗量。在全油门下制动时,发动机转速会降低一定的量。释放制动器,将速度增加到高于定义值的相同值,同时测量曲轴加速度和曲轴旋转的平均消耗量。曲轴角减速度在理想状态下测量。扭矩和比消耗由测量值得出。优点-在不拆卸发动机或使用专用测试架的情况下,可以测量比油耗和有效扭矩。

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