摘要:
A valve timing control device includes a purge path communicating between a hydraulic chamber allowing the entry of hydraulic pressure on starting an engine and a backward pressurized section in an accommodation hole. When the hydraulic chamber allowing the entry of hydraulic pressure on starting the engine is the retardation side hydraulic chamber, a hydraulic pressure derived from an oil pump is supplied to the retardation side hydraulic chamber on starting the engine. On the way, air-mixed oil is discharged to outside of the device by way of a purge path, a backward pressurized section in the accommodation hole and the discharge hole. When the air is discharged, a residual pressure is produced in the backward pressurized section due to oil supplied thereto. The residual pressure results in the increase of an unlocking hydraulic pressure to prevent a locking member from being unlocked. When the application of a retardation side hydraulic pressure is switched to that of an advance side hydraulic pressure, the pressure presses a front end of a locking member against only a biasing force of a biasing means to unlock a locking relation. The valve timing control device allows the use of any kinds of locking pins, and prevents the occurrence of beat noise (abnormal noise) when air-mixed oil unlocks a locking relation on starting the engine.
摘要:
A valve timing adjusting device includes a first rotor that rotates synchronously with a crankshaft of an engine; a second rotor that is relatively rotatable by a predetermined angle within the first rotor, and is secured on the end face of an intake or an exhaust camshaft; and a tension spring that acts as an assisting spring for adjusting a relative position between both the rotors.
摘要:
Due to the fact that a regulator engages with an engagement aperture when hydraulic pressure is low due to unexpected decreases in engine rotation frequency during relative turning of a valve timing control device, the valve timing control device re-enters a regulated state.Control and running of regulation or release of relative rotation position of the valve timing control device by a regulator are performed by an external device distinct from the valve timing control device.
摘要:
A valve timing adjusting device includes a first rotor that rotates synchronously with a crankshaft of an engine; a second rotor that is relatively rotatable by a predetermined angle within the first rotor, and is secured on the end face of an intake or an exhaust camshaft; and a tension spring that acts as an assisting spring for adjusting a relative position between both the rotors.
摘要:
Due to the fact that a regulator engages with an engagement aperture when hydraulic pressure is low due to unexpected decreases in engine rotation frequency during relative turning of a valve timing control device, the valve timing control device re-enters a regulated state. Control and running of regulation or release of relative rotation position of the valve timing control device by a regulator are performed by an external device distinct from the valve timing control device.
摘要:
A valve timing control device has an input rotational member 3, a case 4, and a cover member 10, which constitute a housing 2. A threaded member 11 such as a bolt is used for being integrated with the cover member 10, the case 4 and the input rotational member 3. A welding section 20 is formed at the bolt 11 to prevent the loosening and detachment of the bolt 11.
摘要:
A region including an engaging hole is given surface treatment such as partial quench hardening by induction hardening for improving surface hardness of the region. The partial quench hardening by induction hardening provides the region with satisfactory mechanical strength or surface hardness enough for resisting deformation of the engaging hole and wear-out of an edge of opening of the engaging hole caused by putting in and out of the lock pin.
摘要:
A valve timing control device has a case rotating in synchronization with a crankshaft of an engine. A plurality of projections, which project outwardly in a radial direction of the case, are arranged on an outer circumferential portion of the case at regular intervals. The projection is a chuck site allowing the engagement of a chuck tool of an automatic machine used for an auto-assembly work, the chuck tool being operated in the radial direction. A tapered face is formed at a side, close to the chuck tool, of the projection, the tapered face easily allowing the engagement of the chuck tool when the chuck tool proceeds toward the device.
摘要:
A pneumatic safety tire with a pair of annular rubber reinforcements having crescent sectional shape and applied to a tire carcass at tire sidewalls, the rubber of the reinforcements having a JIS hardness of not less than 70, a tensile stress (Mod.sub.25) after an aging test of not less than 10 kg/cm.sup.2, and a repulsive elasticity by Dunlop tripsometer of not less than 65%.
摘要翻译:一种气动安全轮胎,其具有一对具有月牙形截面形状的环形橡胶增强件并且被应用于轮胎侧壁处的轮胎胎体,加强件的橡胶的JIS硬度不小于70,老化试验后的拉伸应力(Mod25) 不小于10 kg / cm2,Dunlop型千分尺的排斥弹性不低于65%。
摘要:
A rear body structure of a vehicle including right and left rear suspension towers, each jutting upward and sideways into a compartment so as to form a housing for supporting a rear suspension, has a gusset panel which extends transversely in the compartment between the rear suspension towers and is secured to a floor and the right and left rear suspension towers, a first panel and a second panel secured, respectively, to the right and left suspension towers from the front and the back and the gusset panel. These gusset panel and the first and second panels extend transversely in the compartment between the right and left rear suspension towers so as to provide a closed cross sectional hollow structure between and above the right and left rear suspension towers.