Abstract
This research concerns the continuously variable transmission that is to be used in a hybrid drivetrain with a mechanical energy accumulator as a secondary energy source. The purpose of this research is to verify the method of determining the pressure surge which ensures a fast but safe ratio change, from the perspective of the belt slip point of a continuously variable transmission. The obtained results allowed to decide on the design of a more extensive test bench enabling simulation of the load of a continuously variable transmission resulting from the acceleration and braking of the car's mass. In addition, the test results confirmed the possibility of regulating the pressures in two actuators to change the ratio and increase the speed of this change.
Highlights
The upcoming environmental regulations concerning the reduction of emissions of harmful compounds contained in exhaust gases, enhance the popularity of stepless transmissions used for drive systems of passenger cars
Such a solution can be transferred to a reduction in fuel consumption due to the possibility of operating an internal combustion engine in its optimal range due to applying the control strategy required at a given moment
Research The aim of the conducted research was to check the methodology for determining the maximum possible speed of transmission shifting of a continuously variable transmission linked to hybrid drive system's road wheels with a mechanical energy accumulator
Summary
The upcoming environmental regulations concerning the reduction of emissions of harmful compounds contained in exhaust gases, enhance the popularity of stepless transmissions used for drive systems of passenger cars. The secondary energy source (carbon fiber flywheel weighing 6kg) during braking of the vehicle is driven from the rear wheels by a mechanical toroidal variable speed transmission which can even reach 60,000 rpm.
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