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1. (WO2018202229) ACTUATOR FOR ADJUSTING THE COMPRESSION RATIO OF A RECIPROCATING PISTON ENGINE

Pub. No.:    WO/2018/202229    International Application No.:    PCT/DE2018/100197
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Wed Mar 07 00:59:59 CET 2018
IPC: F02B 75/04
Applicants: SCHAEFFLER TECHNOLOGIES AG & CO. KG
Inventors: PREUß, Tobias
HAIN, Bastian
Title: ACTUATOR FOR ADJUSTING THE COMPRESSION RATIO OF A RECIPROCATING PISTON ENGINE
Abstract:
The invention relates to a VCR actuator, i.e. an actuator of an adjustment device for varying the compression ratio of a reciprocating piston engine, comprising an electric motor (2) and a control gear (3). The control gear (3) is embodied as a multi-stage transmission with a spur gear as a step-up gear set (6) and a harmonic drive connected downstream therefrom as a main gear (7), the step-up gear set (6) being coupled to the main gear (7) without play.