US 6,439,183 B1Granted

Valve timing adjusting device

AssigneeDenso Corporation

InventorsKazutoshi Iwasaki, Masayasu Ushida, Yoshio Matsumoto

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Abstract

A valve timing adjusting device, in which the housing member including a chain sprocket and a shoe housing, and a vane rotor are relatively rotatable. The inner surfaces on both axial sides of the housing member and the outside surfaces on both axial sides of the vane rotor slide each other. A retard oil passage communicating with each retard hydraulic chamber is formed in an outside surface of the vane rotor on the side to which a hydraulic fluid is supplied through an oil passage formed in a camshaft. Furthermore, an advance oil passage communicating with each advance hydraulic chamber is formed at an interval of about 90 degrees at the center of an inner surface of the chain sprocket on the side to which the hydraulic fluid is supplied through a groove oil passage formed in the camshaft.

Claims7

Dependent claims

A valve timing adjusting device which is installed in a driving force transmitting system for transmitting a driving force from a driving shaft of an internal combustion engine to a driven shaft for opening and closing at least one of an intake valve and an exhaust valve, and adjusts the opening-closing timing of at least either one of the intake valve and the exhaust valve, said valve timing adjusting device, comprising:

a housing member rotating together with said driving shaft, said housing member including a peripheral wall and a side wall which is connected with said peripheral wall on an axial end of said peripheral wall, said housing member defining a housing chamber thereinside;
and
a vane member rotating together with said driven shaft, said vane member including a vane housed in said housing chamber to partition said housing chamber into a retard chamber and an advance chamber in a rotation direction, said vane member driven to rotate by a fluid pressure with respect to said housing member within a range of predetermined angle, wherein
said driven shaft includes a fluid supply passage formed to allow a supply of a hydraulic fluid to said retard chamber and said advance chamber;
and
said housing member defines an inner surface located at one axial side to which the hydraulic fluid is supplied from said fluid supply passage,
said vane member defines an outside surface located at one axial side to which the hydraulic fluid is supplied from said fluid supply passage,
said inner surface of said housing member faces said outside surface of said vane member in the axial direction,
a retard passage communicating with said retard chamber and being capable of supplying the hydraulic fluid to said retard chamber, and an advance passage communicating with said advance chamber and being capable of supplying the hydraulic fluid to said advance chamber are formed in at least one of said inner surface of said housing and said outside surface of said vane member.

6 more elements

a housing member rotating together with said driving shaft, said housing member including a peripheral wall and a side wall which is connected with said peripheral wall on an axial end of said peripheral wall, said housing member defining a housing chamber thereinside;
a vane member rotating together with said driven shaft, said vane member including a vane housed in said housing chamber to partition said housing chamber into a retard chamber and an advance chamber in a rotation direction, said vane member driven to rotate by a fluid pressure with respect to said housing member within a range of predetermined angle;
and
a passage member provided on said housing member and said vane member at a side opposite to said driven shaft, said passage member having a fluid supply passage capable of supplying a hydraulic fluid to said retard chamber and said advance chamber, wherein
said housing member defines an inner surface located at one axial side to which the hydraulic fluid is supplied from said passage member,
said vane member defines an outside surface located at one axial side to which the hydraulic fluid is supplied from said passage member,
said inner surface of said housing member faces said outside surface of said vane member in the axial direction,
a retard passage communicating with said retard chamber and being capable of supplying the hydraulic fluid to said retard chamber, and an advance passage communicating with said advance chamber and being capable of supplying the hydraulic fluid to said advance chamber are formed in at least one of said inner surface of said housing and said outside surface of said vane member.

5 more elements

Dependencies are inferred from the claim text.