초록 ▼

Device for determining the mass of a motor vehicle by determining the running resistance of the vehicle with the clutch in the drive train disengaged, and by repeatedly determining the torque of the engine and, at the same time, repeatedly measuring the vehicle acceleration with the clutch engaged a

Device for determining the mass of a motor vehicle by determining the running resistance of the vehicle with the clutch in the drive train disengaged, and by repeatedly determining the torque of the engine and, at the same time, repeatedly measuring the vehicle acceleration with the clutch engaged and by taking into account the ratio of the transmission, an average value of the vehicle mass can be determined with a high degree of accuracy.

대표청구항 ▼

Device for determining the mass of a motor vehicle utilizing signal transmitters for vehicle engine torque, signal transmitters for vehicle speed and acceleration, signal transmitters for indicating engagement states of a clutch between the vehicle engine and vehicle drive train and a computer evalu

Device for determining the mass of a motor vehicle utilizing signal transmitters for vehicle engine torque, signal transmitters for vehicle speed and acceleration, signal transmitters for indicating engagement states of a clutch between the vehicle engine and vehicle drive train and a computer evaluating the signals from these signal transmitters; wherein, during a first operating vehicle phase and with the clutch disengaged, the computer determines a coefficient for the running resistance of the vehicle in accordance with the equation fE=ba/g, in which fE=a coefficient dependent on the running resistance ba=the acceleration value of the vehicle with the clutch disengaged g=gravitational acceleration; wherein during a second operating vehicle phase with the clutch engaged, the computer repeatedly determines values for the acceleration of the vehicle; wherein the computer then repeatedly determines a value correlated with the mass of the vehicle by forming a quotient of engine torque, determined repeatedly during the second operating phase, and a quantity dependent on the difference between a vehicle acceleration value and the vehicle coefficient of running resistance; wherein a signal transmitter device reproduces the particular ratio of the transmission; and wherein the computer calculates a value mEi correlated with the vehicle mass according to [Figure] in which bei=acceleration values of the vehicle with the clutch engaged hG=ratio of the transmission r=dynamic rolling radius of the drive wheels JM=moment of inertia of the engine MMi=values of the drive torques and engine torques.