Patent application number | Description | Published |
20090288625 | VALVE TIMING CONTROL DEVICE - A valve timing control device includes a phase displacement restricting mechanism for creating a restricting state where relative rotational phase displacement of a driven side rotational member relative to a driving side rotational member is restricted within a permissible range and an unrestricting state where the restriction is released, a communication passageway for establishing communication between the phase displacement restricting mechanism and one of an advanced angle chamber and a retarded angle chamber, a valving element chamber provided midway the communication passageway, a valving element provided in the valving element chamber; the valving element selectively positioned to a closing state for closing the communication passageway to render the phase displacement restricting mechanism into the restricting state and an opening state for opening up the communication passageway to render the phase displacement restricting mechanism into the unrestricting state, and a leak passageway formed in the valving element and configured to allow leakage of fluid from an intermediate passage to the outside when the valving element is under the closing state. | 11-26-2009 |
20100186697 | VALVE TIMING CONTROL APPARATUS - A valve timing control apparatus includes a driving side rotational member, a driven side rotational member, a fluid pressure chamber, a dividing portion formed at the other one of the driving side rotational member and the driven side rotational member so as to divide the fluid pressure chamber into an advanced angle chamber and a retarded angle chamber, and a fluid control valve portion arranged orthogonally relative to the camshaft at an opposite side of the camshaft so as to dispose the driving side rotational member and the driven side rotational member between the fluid control valve portion and the camshaft, the fluid control valve portion including a first linearly moving member linearly moving in an orthogonal direction relative to the camshaft, thereby controlling supplying and discharging of a fluid relative to the advanced angle chamber and the retarded angle chamber. | 07-29-2010 |
20100212615 | VALVE TIMING CONTROL APPARATUS - A valve timing control apparatus includes a driving-side rotating member, a driven-side rotating member arranged coaxially with the driving-side rotational member so as to be rotatable relative to the driving-side rotating member, a retarded angle chamber and an advanced angle chamber, each of which is defined by the driving-side rotating member and the driven-side rotating member, a lock mechanism locking a relative rotational phase of the driven-side rotating member at a predetermined phase between a most advanced angle phase and a retarded angle phase, an operation fluid supply-and-discharge mechanism supplying/discharging an operation fluid to/from the retarded angle chamber, the advanced angle chamber and the lock mechanism, and a first air inlet mechanism for connecting one of the retarded angle chamber and the advanced angle chamber to an outside of the valve timing control apparatus in order to allow air to flow thereinto. | 08-26-2010 |
20100242883 | VALVE TIMING CONTROL APPARATUS - A valve timing control apparatus includes an inner rotor, a vane, an outer rotor, a first fluid passage to an advanced angle chamber, a second fluid passage to a retarded angle chamber, a lock mechanism restricting the relative rotation between the inner and outer rotors, a third fluid passage establishing an unlocked state by supplying the fluid to the lock mechanism and a locked state by discharging the fluid from the lock mechanism, a first switching valve supplying the fluid to each of the first and second fluid passages and discharging from each of the first and second fluid passages and a second switching valve controlling a fluid flow to be supplied to or discharged from the third fluid passage, wherein the first switching valve is operated independently from the second switching valve, and the fluid is supplied to the first switching valve via the second switching valve. | 09-30-2010 |
20100319641 | VARIABLE VALVE TIMING CONTROL APPARATUS - A variable valve timing control apparatus includes a driving rotor, a driven rotor coaxially arranged with the driving rotor, a fluid pressure chamber defined between the driving rotor and the driven rotor, a partition portion arranged at one of the driving rotor and the driven rotor and dividing the fluid pressure chamber into advanced and retarded angle chambers, a first fluid control mechanism controlling supply and discharge of a hydraulic fluid to and from the fluid pressure chamber, a first phase restriction portion restricting and releasing a relative rotational phase between the driving rotor and the driven rotor within and from a first restriction range, a second phase restriction portion restricting and releasing the relative rotational phase within and from a second restriction range, and a second fluid control mechanism controlling the supply and discharge of the hydraulic fluid to and from the first and second phase restriction portions individually. | 12-23-2010 |
20130118428 | VALVE OPENING AND CLOSING CONTROL APPARATUS - A valve opening and closing time control apparatus includes;
| 05-16-2013 |
20130312679 | VARIABLE VALVE TIMING CONTROL APPARATUS - A variable valve timing control apparatus includes a driving-side rotating member, an driven-side rotating member, a cam shaft, a control valve switching supply and discharge of a working fluid relative to an advanced angle chamber and a retarded angle chamber, an advanced angle-side oil passage, a retarded angle-side oil passage, a spider provided with a first oil passage and a second oil passage, a seal mechanism partitioning between at least one of the first oil passage and the second oil passage, and an outside space, and the seal mechanism allows air to come in the at least one of the first oil passage and the second oil passage in a case where pressure inside the at least the one of the first oil passage and the second oil passage is lower than air pressure of the outside space. | 11-28-2013 |
20130319357 | VALVE TIMING CONTROL APPARATUS - A valve timing control apparatus includes a driving-side rotation member, a driven-side rotation member, a fluid chamber, an advanced angle chamber and a retarded angle chamber, a fluid control mechanism, a first intermediate lock mechanism configured to selectively lock a relative rotation phase of the driven-side rotation member relative to the driving-side rotation member at a first intermediate lock phase and release a locked state of the relative rotation phase at the first intermediate lock phase, a most retarded angle lock mechanism configured to selectively lock the relative rotation phase at a most retarded angle lock phase and release a locked state of the relative rotation phase at the most retarded angle lock phase, and a second intermediate lock mechanism configured to selectively lock the relative rotation phase at a second intermediate lock phase and release a locked state of the relative rotation phase at the second intermediate lock phase. | 12-05-2013 |
20140076250 | VALVE TIMING CONTROL APPARATUS - A valve timing control apparatus includes a driving-side rotation member, a driven-side rotation member, a fluid chamber, an advanced angle chamber and a retarded angle chamber, a fluid control valve portion controlling supply and discharge of fluid relative to each of the advanced angle chamber and the retarded angle chamber, an accumulator accumulating a portion of fluid supplied to the fluid control valve portion from a pump at a fluid storage portion during an operation of an internal combustion engine and supplying fluid accumulated at the fluid storage portion to the fluid control valve portion at a start of the internal combustion engine, and a supply flow passage connecting the pump, the fluid control valve portion, and the accumulator in series. The accumulator includes a relief control valve portion configured to maintain a pressure of fluid accumulated at the fluid storage portion equal to or smaller than a predetermined value. | 03-20-2014 |
20140076254 | VALVE OPENING-CLOSING TIMING CONTROL APPARATUS - A valve opening-closing timing control apparatus includes a partition portion partitioning a fluid pressure chamber into an advanced angle chamber and a retarded angle chamber, a phase control portion controlling a rotational phase of a driven-side rotational member relative to a driving-side rotational member, a lock mechanism including a lock member and a lock recess for locking the rotational phase at a predetermined phase, a lock control portion switching the lock mechanism between a locked state and an unlocked state by supplying and discharging a pressurized fluid to and from the lock recess, a phase controlling supply passage supplying the pressurized fluid to the advanced angle chamber and the retarded angle chamber, a lock controlling supply passage supplying the pressurized fluid to the lock recess, and a one-way valve blocking the pressurized fluid supplied to the lock controlling supply passage from flowing into the phase controlling supply passage. | 03-20-2014 |
20140283769 | INTERNAL COMBUSTION ENGINE - An internal combustion engine includes a variable valve timing control apparatus including a driving-side rotating member rotating about a rotary axis by rotational force transmitted from a crankshaft, a driven-side rotating member including at least one fluid pressure chambers partitioned and formed with at least one advanced angle chambers and at least one retarded angle chambers and integrally rotating with a camshaft for opening and closing a valve, and a lock mechanism configured with a lock member provided at one of the driving-side rotating member and the driven-side rotary member to be engageable and disengageable with a recessed portion formed at the other of the driving-side rotating member and the driven-side rotary member, and an engine control unit for stopping the internal combustion engine to position a portion where the lock mechanism is formed below a virtual line passing through the rotary axis when the internal combustion engine is stopped. | 09-25-2014 |
20140283771 | INTERNAL COMBUSTION ENGINE - An internal combustion engine includes a lift amount adjusting apparatus, a valve opening-closing timing control apparatus, a first assist portion, a second assist portion, and an engine control portion. The engine control portion performs a lift amount adjustment control controlling the lift amount adjusting portion to reduce a push force that the valve applies on the camshaft when the camshaft rotates in a case where the engine control portion receives start information of the internal combustion engine, controls the phase changing portion thereafter to change the relative rotational phase toward the advanced angle direction or toward the retarded angle direction on a basis of a predetermined condition, controls the lift amount adjusting portion thereafter to make the lift amount reach a predetermined amount corresponding to the predetermined condition, and drives a starter motor of the internal combustion engine thereafter. | 09-25-2014 |
20150059671 | CONTROL VALVE - A control valve includes a valve case, a spool accommodated in the valve case, an electromagnetic solenoid operating the spool along a spool axis extending in a longitudinal direction, the valve case including a pump port, an advanced angle port, a retarded angle port, and an unlocking port, the spool being operated to at least five positions, and a lock control fluid passage formed inside the spool in an attitude along the spool axis, the lock control fluid passage allowing the fluid from the pump port to be supplied only to the unlocking port irrespective of the position of the spool when the spool is operated to any one of the positions at which the fluid is supplied from the pump port to the unlocking port. | 03-05-2015 |