摘要:
An axis of a cylinder (Ax1) slants at an angle closer to vertical than to horizontal. In a cylinder head (22), a first support wall (36) supports a valve actuating mechanism. A second support wall (37) is disposed away from the first support wall (36) in a direction of an axis (Ax2) of a camshaft (22). A breather plate (70) together with a ceiling wall (38) of the cylinder head forms a breather compartment (Bc1) therebetween. The breather plate (70) overlaps the valve actuating mechanism (45) as seen from a direction of the axis of the cylinder (Ax1). The breather plate (70) includes a bulged portion (71). A lower end of the bulged portion (71) is closer to a first valve (430) end than an upper end of the bulged portion (70).
摘要:
A distributed load bearing 130 including a roller 132, an inner flex ring 134, a pin 136 and a load distribution spring 138. The inner flex ring 134 is positioned radially inwards of the roller 132, and the pin 136 is positioned radially inwards of the inner flex ring 134, and the load distribution spring 138 is positioned in a cavity defined by the pin and the inner flex ring. The load distribution spring 138 is preloaded, so as to apply a force to the pin and so as to apply a plurality of radially outward forces to the inner flex ring 134.
摘要:
The invention relates to a support module (1) for an OHC valve gear of an internal combustion engine, comprising two upright supporting walls (2) spaced apart from each other, which can be connected to a cylinder head cover in the segment of the upper faces (3) of the supporting walls and to a cylinder head in the segment of the lower faces (4) of the supporting walls, wherein at least one camshaft (5) and at least one lever pin (6, 7) having one or more cam-following levers (8, 9) are supported in the supporting walls (2), wherein the supporting walls (2) are integrally bridged at the upper faces (3) thereof by a transverse bar (10), wherein a leg (11) for directly connecting the support module (1) to the cylinder head integrally protrudes from the lower face (4) of each supporting wall (2) and wherein the supporting walls (2) can be produced together with the transverse bar (10) and the legs (11) from steel sheet by means of punching and bending.
摘要:
An anti-rotation guide for a lifter in an overhead valve valvetrain. The anti-rotation guide includes a plug having two lobes connected through a neck region. A first lobe of the plug is held within a bore in the lifter. The bore forms an opening at the edge of the lifter through which the neck of the plug emerges. The bore in the lifter accommodates a first lobe of the plug that is wider than the opening in the edge of the lifter, whereby the plug is shaped to prevent its slipping from the lifter through the opening. The lifter reciprocates in a first bore in the cylinder head. The second lobe of the plug extends outward from the lifter into a second bore formed in the cylinder head and adjoining the first bore. The second lobe reciprocates in the second bore and limits rotation of the lifter.
摘要:
A cam follower for operable attachment to a valve lifter assembly for use with a variable cam lobe camshaft in a variable valve timing system includes a housing with a central cavity and a mushroom head with a stem pivotably connected to the housing in the central cavity, the mushroom head having a radiused surface for contacting a cam lobe surface. The cam follower is used in combination with a variable cam surface of an axially displaceable camshaft to obtain improvements in idling speed and volumetric efficiency.
摘要:
An internal combustion engine (1) includes: a cylinder head (2); an oil feed passage (16); a camshaft (3); a vacuum pump (35) that has a rotor (36) and a housing (42), with a negative-pressure chamber defined by the rotor (36) and the housing (42) being connected to the oil feed passage (16), and is configured to generate negative pressure inside the negative-pressure chamber as the rotor (36) rotates; a hydraulic lash adjuster (21) connected to the oil feed passage (16); and a branch passage (76) branched from the oil feed passage (16). An open hole (73) open to the atmosphere is provided at a leading end of the branch passage (76), and oil is fed through the open hole (73) to the camshaft (3) while the internal combustion engine (1) is in operation, and air is introduced through the open hole (73) into the vacuum pump (35) while the internal combustion engine (1) is stopped.
摘要:
The present invention relates to a valve train mechanism and a fuel supply system of internal combustion engine, and particularly relates to an oil control device of a hydraulic fully variable valve system of the internal combustion engine. This device connected with the hydraulic valve system of internal combustion engine, the device consists of a housing, a rotary valve, a hydraulic accumulator and a transmission mechanism. The rotary valve, the hydraulic accumulator and the transmission mechanism are installed in the housing. The rotary valve consists of a rotary valve shaft and a rotary valve sleeve. The hydraulic accumulator consists of an accumulator piston, an accumulator spring, an end cover, a sealing seat ring and a rubber gasket and is installed in the cavity at one end of the housing. An accumulator chamber is provided between the rotary valve and the hydraulic accumulator. The transmission mechanism consists of a transmission gear, a gear shaft and a cross slide coupling. The transmission gear is installed on the gear shaft, while the gear shaft is connected with the rotary valve shaft through the cross slide coupling. The present invention can replace a high-frequency solenoid valve, it is applicable to use with hydraulic fully variable valve system of single-cylinder and multi-cylinder internal combustion engines. And the present invention has the advantages of simple structure, reliability, good manufacturability and low cost.