The road fuel mileage of the conventional automobile (using a diesel or spark plug engine as a prime mover) is considerably lower than the theoretical optimum, due to the fact that the relation between engine shaft speed and torque (or BMEP) is often unfavorable. Insertion of a hydraulic transmission between engine shaft and road wheels offers a possibility of greatly improving engine operating conditions. This paper describes a hydrostatic system with two variable displacement pump/motor units and a pneumatic accumulator for regenerative braking. The two swash plates facilitate optimization of hydraulic parameters as well as engine BMEP and the rear one which is the primary controller permits modulation of regenerated energy in both directions with optimum efficiency and facility. Electronic units are used to control the system. The system promises considerable economy and good automatic-like driveability. (Peters)
A diesel-powered hydro-pneumatic system for the automobile
Ein dieselgetriebenes Hydro-Pneumatiksystem fuer Kraftfahrzeuge
ASME-Papers ; 1-8
1980
8 Seiten, 6 Bilder, 3 Tabellen, 7 Quellen
Conference paper
English
A Diesel-powered hydro-pneumatic system for the automobile
Automotive engineering | 1980
|European Patent Office | 2024
|European Patent Office | 2021
|Hydro-pneumatic suspension module, hydro-pneumatic suspension system and vehicle
European Patent Office | 2020
|