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1. US20050103298 - Control structure for the adjusting motor of an electric camshaft adjuster

Office United States of America
Application Number 11015520
Application Date 17.12.2004
Publication Number 20050103298
Publication Date 19.05.2005
Grant Number 7059285
Grant Date 13.06.2006
Publication Kind B2
IPC
F01L 1/34
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1Valve-gear or valve arrangements, e.g. lift-valve gear
34characterised by the provision of means for changing the timing of the valves without changing the duration of opening
F01L 1/344
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1Valve-gear or valve arrangements, e.g. lift-valve gear
34characterised by the provision of means for changing the timing of the valves without changing the duration of opening
344changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
F01L 1/352
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1Valve-gear or valve arrangements, e.g. lift-valve gear
34characterised by the provision of means for changing the timing of the valves without changing the duration of opening
344changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
352using bevel or epicyclic gear
CPC
F01L 1/022
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1Valve-gear or valve arrangements, e.g. lift-valve gear
02Valve drive
022Chain drive
F01L 1/024
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1Valve-gear or valve arrangements, e.g. lift-valve gear
02Valve drive
024Belt drive
F01L 1/34
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1Valve-gear or valve arrangements, e.g. lift-valve gear
34characterised by the provision of means for changing the timing of the valves without changing the duration of opening ; and without affecting the magnitude of the valve lift
F01L 1/344
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1Valve-gear or valve arrangements, e.g. lift-valve gear
34characterised by the provision of means for changing the timing of the valves without changing the duration of opening ; and without affecting the magnitude of the valve lift
344changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
F01L 1/352
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
1Valve-gear or valve arrangements, e.g. lift-valve gear
34characterised by the provision of means for changing the timing of the valves without changing the duration of opening ; and without affecting the magnitude of the valve lift
344changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
352using bevel or epicyclic gear
F01L 2800/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
2800Methods of operation using a variable valve timing mechanism
Applicants INA-Schaeffler KG
Inventors Schäfer Jens
Steigerwald Martin
Overberg Martin
Agents Volpe and Koenig, P.C.
Priority Data 10231225 11.07.2002 DE
Title
(EN) Control structure for the adjusting motor of an electric camshaft adjuster
Abstract
(EN)

A control structure for the adjusting motor (8) of an electric camshaft adjuster (6) in an internal combustion engine (1) is provided. The control structure includes a controller (19) which processes measuring signals of the internal combustion engine (1) to control data for the adjusting motor (8). A controller (19) which has meaningful values for the adjusted setpoint rotational speed of the adjusting motor (8), even when the input differential signal has a zero value, is obtained by applying the signal of an uncontrolled rotational speed (21) to the output signal (20) of a controlled setpoint rotational speed.