METHOD AND DEVICE FOR SIMULATING THE DRIVING PROPERTIES OF A DRIVE CONCEPT TO BE DEVELOPED FOR A MOTOR VEHICLE
First Claim
1. Method for simulating the driving properties of a drive concept to be developed for a motor vehicle, wherein in real driving operation of a mass-production vehicle, the engine control (10) and transmission control (9) are influenced by means of an additional control device (6), in such a manner that the longitudinal dynamics of the mass-production vehicle correspond to those of a designed hybrid drive, whereby a simulation model of the hybrid drive to be designed is stored in the memory of the control device (6).
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Abstract
The invention relates to a method and an associated device for simulating the driving characteristics of a drive concept to be developed for a motor vehicle. The aim of the invention is to provide a method and an associated device for simulating the driving characteristics of a drive concept to be developed for a motor vehicle, using which the longitudinal dynamics and the energy requirements of designed concepts are simulated, compared with one another and validated during an actual driving operation. According to the invention, in order to simulate the driving characteristics of a drive concept to be developed for a motor vehicle during an actual driving operation for a production vehicle, the engine and transmission control are influenced by means of an additional control unit in such a way that the longitudinal dynamics of the production vehicle correspond to that of a designed hybrid drive. To achieve this, the additional control unit for influencing the longitudinal dynamics of the conventional carrier vehicle intervenes in the signal path of the accelerator pedal in the carrier vehicle and can determine the position of the pedal, simulating the position of a ‘virtual accelerator pedal’ by means of a signal generator, thus regulating the acceleration of the vehicle. The control unit accesses the CAN data bus of the drive train of the carrier vehicle to deliver the current speed, the current gear selected and the position of the brake pedal, which represent important input variables for the simulation.
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19 Claims
- 1. Method for simulating the driving properties of a drive concept to be developed for a motor vehicle, wherein in real driving operation of a mass-production vehicle, the engine control (10) and transmission control (9) are influenced by means of an additional control device (6), in such a manner that the longitudinal dynamics of the mass-production vehicle correspond to those of a designed hybrid drive, whereby a simulation model of the hybrid drive to be designed is stored in the memory of the control device (6).
- 13. Device for simulating the driving properties of a drive concept to be developed for a motor vehicle, wherein in a real mass-production vehicle, an additional control device (6) is provided to influence the longitudinal dynamics of the mass-production vehicle, with which device the longitudinal dynamics of the mass-production vehicle are set in such a manner that they correspond to those of a designed hybrid drive.
Specification