Aisin Seiki Kabushiki Kaisha

Hiromitsu Shigyo

Masaki Kobayashi

Yoshiaki Yamakawa

Kentaro Nagura

Yuji Noguchi

Takeo Asahi

Kazuo Ueda

Hideyuki Suganuma

Toru Sakakibara

Yoshihiro Kawai

Yugo Nakamura

A variable valve timing control device includes a valve unit including a spool having a plurality of land portions at an outer circumference of the spool, and being formed with a drain flow path inside the spool. The valve unit allows a second pump port and a lock port to communicate with each other in a case where the spool is set at an unlock position where a lock state of a lock mechanism is released, and the valve unit closes the second pump port with the land portion of the spool and allows the lock port to communicate with the drain flow path in a case where the spool is set at a lock position where the lock mechanism is allowed to be shifted in the lock state.

Variable valve timing control device

A valve opening and closing timing control apparatus includes a driving-side rotational body, a driven-side rotational body, a cylindrical member provided at an inner portion of the driven-side rotational body, a bolt including a cylinder shaft portion, an advanced angle flow passage and a retarded angle flow passage, an introduction passage bringing the working fluid supplied from an outside to flow, a first connection passage bringing the working fluid at the introduction passage to flow to an inner side of the cylinder shaft portion, a second communication passage and a third communication passage arranged at the cylinder shaft portion, and a control valve element provided at the inner side of the cylinder shaft portion, the second communication passage and the advanced angle flow passage being in communication with a void provided between the bolt head and the cylindrical member and between the cylinder shaft portion and the driven-side rotational body.

Valve opening and closing timing control apparatus

A flow passage partition structure including a flow passage member including a flow passage space portion, a partition member partitioning the flow passage space portion into a first flow passage and a second flow passage, the partition member including a first plate and a second plate being in contact with the first plate in a state where the second plate is press-fitted in an inner circumferential surface of the flow passage space portion, the first plate including an outer circumferential surface that is out of contact with the inner circumferential surface of the flow passage space portion, and the first plate, the second plate, and the inner circumferential surface of the flow passage space portion forming a space portion that corresponds to a foreign material storage portion.

Flow passage partition structure and fluid control valve

A valve opening and closing timing control device includes: a driving-side rotating body including a sprocket around which a rotating body interlocked with a driving shaft of an internal combustion engine is wound and rotates in synchronization with the driving shaft; a driven-side rotating body supported by an inside of the driving-side rotating body to be rotatable coaxially with the same rotational axis and integrally rotating with a valve opening and closing cam shaft; a bolt inserted into the driven-side rotating body to fix the driven-side rotating body to the cam shaft; a fluid pressure chamber formed by being partitioned between the driving-side and driven-side rotating bodies; and a control valve switching supplying and discharging of a hydraulic fluid with respect to the fluid pressure chamber such that a relative rotational phase of the driven-side rotating body with respect to the driving-side rotating body is changed.

Valve opening and closing timing control device

A valve opening and closing timing control device includes: a driving-side rotating body coaxial with a rotational axis and rotated in synchronization with an internal combustion engine crankshaft; a driven-side rotating body coaxial with the rotational axis and integrally rotated with a valve opening and closing cam shaft; a connecting member screwed into the cam shaft for connecting the driven-side rotating body to the cam shaft and having a pump port to which a fluid is supplied, an advance angle port communicating with an advance angle chamber, and a retarded angle port communicating with an retarded angle chamber; a spool accommodated within a space of the connecting member to reciprocally move between advance angle, neutral, and retarded angle positions along the rotational axis; and an actuator causing a pressing force to act along rotational axis and operates the spool to be in the neutral, advance angle, or retarded angle positions.

Provided is a valve timing control device, including: a drive side rotating member, a driven side rotating member, fluid pressure chambers, partition portions, advanced angle control oil passages, retarded angle control oil passages, an intermediate lock mechanism, and a retarded angle lock mechanism, in which the intermediate lock mechanism is configured to include a single intermediate lock member, a biasing mechanism which biases the intermediate lock member, and an intermediate fitting depression portion, and the retarded angle lock mechanism is configured to include a single retarded angle lock member, a biasing mechanism which biases the retarded angle lock member, and a retarded angle fitting depression portion.

Growing community of inventors

Toyota, Japan

Hiromitsu Shigyo