It is essential for engines to have the weight, performance, service life and consumption expected in the competition. Strict tests are essential to ensure these. Due to greater personal safety, exact reproducibility, and controllable conditions, these tests are performed on a motorcycle brake bench instead of vehicle tests.
The goal was to develop a system with which we can provide conditions as close as possible to the real racing situation for the tested engine. With its help, more accurate life tests can be carried out, and the car with the SZEngine engine optimized for the current race track can always start.
The basis of the brake pad is a massive closed-section frame. For this, both the structure holding the internal combustion engine and the drive chain and brake motor combination used for the measurement were fixed.
A linear rail is rigidly fixed to the frame, on which the entire drive chain and brake motor can be moved in the axial direction. Braking is provided by a Bosch Rexroth 2AD164C type 46 kW asynchronous machine connected to a Bosch Rexroth DKR02 drive controller. An HBM T10F torque meter, two safety clutches and a torsion shaft were installed in the drive chain.
The crankshaft speed and the throttle position together determine the engine load. In the case of value-retaining regulation of these properties, point-of-work tests can be carried out, but in the case of follow-up regulation, competition simulations can also be run based on the corresponding curves recorded in previous competitions.
2020/2021
