Engine with hydraulically variable cam timing

Patent · Tue Aug 09 04:00:00 EDT 1988

OSTI ID:6750195

Baker, S F

Cam timing control means are described in combination with an internal combustion engine having a housing supporting a rotatable output member, a cam, and drive means between the output member and the cam to drive the cam at a rotational speed related to that of the output member. The cam timing control means consists of: a drive member and a driven member forming a part of the drive means, the drive member being positively connected with the output member for direct rotation therewith and the driven member being positively connected with the cam for direct rotation therewith, resiliently yieldable means drivably connecting the drive and driven members and resiliently yieldable in response to variable drive resisting torque applied to the driven member to allow proportional retarding of the phase relation of the cam with respect to the output member, and fluid coupling means operatively connected between the driven member and the housing and controllable to apply a variable fluid drag on the driven member to create variable amounts of drive resisting torque for the control of cam timing.

• Assignee: General Motors Corp., Detroit, MI
• Patent Number(s): US 4762097
• OSTI ID: 6750195
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
CONTROL EQUIPMENT
DESIGN
ENGINES
EQUIPMENT
FLUID FLOW
FLUID MECHANICS
FLUIDS
HEAT ENGINES
HYDRAULIC EQUIPMENT
HYDRAULICS
INTERNAL COMBUSTION ENGINES
MACHINE PARTS
MECHANICS
OPERATION
SHAFTS
TIMING PROPERTIES
TORQUE
WORKING FLUIDS