摘要:
A device for adjusting the phase position of a cam shaft of an internal combustion engine and for supplying an assembly with a partial vacuum, said device comprising: a phase setter for adjusting the phase position of the cam shaft relative to a crankshaft of the internal combustion engine; a vacuum pump for the assembly; and an attachment housing for the vacuum pump, wherein the attachment housing is mounted on the internal combustion engine and forms a housing or at least a housing cover for the phase setter.
摘要:
A multicylinder engine for a motorcycle includes a valve actuation mechanism having a hydraulically-operated valve pausing mechanism for holding at least one of an intake valve and an exhaust valve of selected cylinders in a suspended state. The valve actuation mechanism operates the intake valve and the exhaust valve, and controls flow of oil through an oil passage which introduces working oil to the valve pausing mechanism from a hydraulic-pressure control device. Air-bleeding holes are formed in the cylinder head. The air-bleeding holes are fluidly connected with portions of the oil passages that are located at a highest level in the oil passages while the motorcycle is parked in an inclined state with its side stand down.
摘要:
The valve train assembly with magnet uses the magnet to collect ferrous metal particles that are in the oil prior to their arrival at the high pressure cavity of the hydraulic lash adjuster. The magnet can be positioned in the low pressure cavity of the hydraulic lash adjuster, in the bore of the hollow rocker arm shaft or in the bore of the hollow push rod.
摘要:
A valve timing control apparatus controls a valve timing of intake/exhaust valve of an engine. The apparatus includes a housing rotated with a driving shaft. The housing has a chamber house accommodating a vane rotor rotative with a driven shaft to retard and advance sides relative to the housing by being exerted with hydraulic pressure in retard and advance chambers in the chamber house. A filter is provided for removing foreign matters in a fluid passage extending from a slidable portion between the driven shaft and a bearing toward both the housing and the vane rotor through a connected portion between the driven shaft and the vane rotor. The filter is provided on the side of both the housing and the vane rotor with respect to the slidable portion.
摘要:
A method of controlling a variable valve timing system comprising calculating, by a sliding mode control, a first control amount based on a deviation between a target value and an actually measured value of the position of the displacing member of the variable valve timing system, calculating a second control amount by integrating the deviation as an input when the deviation falls within a predetermined numeric value range containing a zero value, or by integrating the zero value as the input when the deviation falls outside the predetermined numeric value range; and adding the first control amount and the second control amount to set a compensation control amount for compensating the position of the displacing member.
摘要:
A control valve (18) for a device (1) to modify the timing of an internal combustion engine is provided. Here, a controlled rotation of the camshaft in reference to the crankshaft can be achieved via a hydraulic adjustment drive. A control valve (18) with operative connectors (A, B), a hydraulic connector (P), and at least one reservoir connector (T, T1, T2) controls the inflow of hydraulic fluid into and/or the outflow of hydraulic fluid out of the hydraulic adjustment drive. A filter (46) is arranged between the hydraulic connector (P) and the operative connectors (A, B).
摘要:
A device for electrically adjusting the relative rotation of two shafts, particularly a camshaft (15) in relation to a crankshaft of an internal combustion engine is provided. The adjusting device includes an adjusting gear system which is embodied as a triple-shaft gear mechanism and is provided with a crankshaft-fixed input part, a camshaft-fixed output part, and an adjusting shaft (13) that is connected in a torsion-proof manner to an electric adjusting motor shaft (32) of an electric adjusting motor (3). The adjusting motor (3) is configured as a brushless DC motor having a housing-fixed stator (35) and a permanent magnet rotor (34). A high degree of adjustment accuracy and adjustment speed are provided with minimal space requirements and low power consumption. This is achieved through the use of a double eccentric gear mechanism (2) and a double planetary gear mechanism, which are provided with a speed reduction of up to about 1:250 and low friction, as an adjusting gear system while using a highly inductive permanent magnet rotor for the adjusting motor (3).
摘要:
A camshaft adjuster for motor vehicles has a stator and a rotor rotatable relative thereto between which pressure chambers are provided. Pressure medium is supplied in a controlled way via a valve to the pressure chambers in order to rotate the rotor relative to the stator. Mounting of the valve in the internal combustion engine of the motor vehicle is often difficult when mounting conditions are tight, sometimes even impossible. In order for the camshaft adjuster to be usable even in tight spatial conditions, the valve is arranged on the side facing away from the camshaft connection. The valve can therefore be arranged stationarily axially outside of the engine of the motor vehicle. The camshaft adjuster requires thus only little mounting space.
摘要:
A filter is annularly attached around a peripheral wall of a housing. The filter is composed of a filtering element that covers a fluid passage for inhibiting foreign objects from entering, a supporting portion for supporting the filtering element, and a connecting portion for connecting between both ends of the supporting portion. The connecting portion is narrower than the supporting portion. The filter is movable radially in two directions according to a clearance between the filter and the housing. A contact portion is formed, with being able to be slid within a movable range of the filter, between an outer surface portion of the peripheral wall that surrounds an opening of the fluid passage and an inner surface portion of the filter that surrounds the filtering element.
摘要:
An oil pressure control apparatus for an internal combustion engine that has a source of hydraulic pressure and a hydraulic actuator which is actuated by hydraulic pressure provided via a fluid passage which is in communication with the source of hydraulic pressure. A control valve is disposed in the fluid passage for controlling the hydraulic pressure introduced to the actuator. A damper, which is disposed in a fluid communication between the hydraulic actuator and the control valve, is operative to attenuate the force of a pulsing stream of a working fluid in the fluid passage.