Aisin Seiki Kabushiki Kaisha

Shohei Masuda

Masaki Kobayashi

Kazuo Ueda

Kazunari Adachi

Kenji Fujiwaki

Mitsuru Uozaki

Yoshiyuki Kawai

Kenji Ikeda

Hideomi Iyanaga

Kenji Nonaka

Satoshi Sakata

A valve opening/closing timing control apparatus includes: a driving side rotational body synchronously rotating with a crankshaft of an internal combustion engine; a driven side rotational body arranged in the driving side rotational body to share a rotational axis therewith and integrally rotating with a camshaft; advanced angle and retarded angle chambers defined between the driving side and driven side rotational bodies; a lock mechanism maintaining a relative rotational phase between the driving side and driven side rotational bodies by separately biasing first and second lock members to be engaged with first and second recesses; and a fluid controller releasing the locked state by supplying a hydraulic fluid to the first and second recesses, and controlling the relative rotational phase by supplying and discharging the hydraulic fluid to the advanced angle and retarded angle chambers.

Valve opening/closing timing control apparatus

A valve opening/closing timing control device includes a driving rotating body that rotates in synchronization with a crankshaft, a driven rotating body that rotates integrally with a camshaft, a phase detection mechanism that detects the relative rotation phase of the driving rotating body and the driven rotating body, a retarding chamber and an advancing chamber between the driving rotating body and the driven rotating body, a lock mechanism capable of constraining the relative rotation phase to a lock phase, a supply/discharge mechanism that supplies/discharges working fluid to/from the advancing chamber, the retarding chamber, and the lock mechanism, and a control unit that controls operation of the supply/discharge mechanism. At startup of the engine, if the detected relative rotation phase is not at the lock phase, the control unit controls the supply/discharge mechanism so as to stop successive supply of working fluid to the retarding and advancing chambers.

Valve opening/closing timing control device

A valve timing control device includes: a driving side rotating body rotating in synchronization with a crankshaft of an internal combustion engine (E); a driven side rotating body rotating integrally with a camshaft of the internal combustion engine and capable of rotating relative to the driving side rotating body; a fluid pressure chamber formed by the driving side rotating body and the driven side rotating body; a partition portion arranged in the fluid pressure chamber and partitioned into a retard chamber and an advance chamber an intermediate lock mechanism including a concave portion a lock member; and a phase control unit controlling the supply of a fluid to the retard chamber and the discharge of the fluid from the advance chamber or the supply of the fluid to the advance chamber and the discharge of the fluid from the retard chamber.

Valve timing control device

A valve timing control apparatus includes a driving-side rotation member, a driven-side rotation member, a first lock mechanism selectively achieving a first lock state in which a relative rotation phase of the driven-side rotation member relative to the driving-side rotation member is locked at an intermediate lock phase and a first lock release state, and a second lock mechanism selectively achieving a second lock state in which the relative rotation phase is locked at one of a most advanced angle phase and a most retarded angle phase and a second lock release state, the driven-side rotation member being rotatable relative to the driving-side rotation member by a first clearance angle in the first lock state, the driven-side rotation member being rotatable relative to the driving-side rotation member by a second clearance angle in the second lock state, the second clearance angle being smaller than the first clearance angle.

Valve timing control apparatus

Provided is a valve timing control device, including a drive side rotating member, a driven side rotating member, and a locking mechanism, in which the locking mechanism includes a regulating body, and n stepped portions with which the regulating body engages, the relative rotation phase is regulated in steps from a most retarded phase or most advanced phase until reaching the lock phase, and the positional relationship between the stepped portions and regulating body is set so that, among relative rotations of from a first relative rotation of from the most retarded phase or most advanced phase to a first relative rotation phase regulated by a first stepped portion to a last relative rotation to a last relative rotation, a first predetermined relative rotation other than the last relative rotation is the smallest.

A valve timing control apparatus includes a driving-side rotary body, a driven-side rotary body, a fluid pressure chamber partitioned into a retard angle chamber and an advance angle chamber by a partitioning portion provided in at least one of the driving-side rotary body and the driven-side rotary body, a fluid control mechanism for controlling feeding of working fluid from a working fluid pump for feeding the working fluid to the fluid pressure chamber and controlling also discharging of the working fluid from the fluid pressure chamber, a first lock mechanism capable of restraining a relative rotational phase to a first predetermined phase between a most retarded angle phase and a most advanced angle phase, and a second lock mechanism capable of restraining the relative rotational phase to a second predetermined phase different from the first predetermined phase.

A valve timing control device includes: a driving side rotational member; a driven side rotational member; a fluid pressure chamber; a partition portion; a lock member; a lock groove; and a lock release, wherein the lock release passage is in communication with the lock groove, and the rotational member formed with the accommodation portion is provided with an atmosphere open passage which is in communication with the lock groove when the relative rotational phase is at a specific phase.

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Kariya, Japan

Shohei Masuda