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Chain case structure of engine

A technology of engine and transmission chain, which is applied in the direction of engine components, machines/engines, mechanical equipment, etc. It can solve the problems of reduced durability, vibration, and deformation of cylinder parts of hydraulic control valves, so as to prevent deformation, improve durability, and prevent The effect of vibration

Inactive Publication Date: 2015-03-18
SUZUKI MOTOR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, although in the prior art disclosed in the above-mentioned Patent Document 1, the cylinder portion is disposed above the mounting bracket portion, at this time, it is necessary to dispose the cylinder portion in the direction of the crankshaft at a position not adjacent to the mounting bracket portion. The upper surface of the upper surface extends toward the vehicle body side and overlaps the plane seat for fastening the bracket. Therefore, there is a problem that it is difficult to suppress the movement of the mounting bracket part in the vertical direction due to the cylinder part, and vibration occurs.
[0008] Moreover, in the above-mentioned Patent Document 2, although two cylinders into which the hydraulic control valve is inserted are arranged in the lateral direction of the mounting bracket, there is a possibility that the cylinder is deformed due to the vertical movement of the mounting bracket and the hydraulic control valve is The durability is reduced by such a problem

Method used

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  • Chain case structure of engine
  • Chain case structure of engine
  • Chain case structure of engine

Examples

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Embodiment

[0028] refer to figure 1 - Figure 7 An example of the present invention will be described.

[0029] exist figure 1 Among them, reference numeral 1 is an engine equipped with a variable valve mechanism mounted in a vehicle.

[0030] The engine 1 includes a cylinder block 3 , a cylinder head 4 , a cylinder head cover 5 , and an oil pan 6 as an engine body 2 . The crankshaft 7 is rotatably provided in the cylinder block 3 .

[0031] A transmission chain chamber 8 for covering a timing chain of the engine 1 is arranged at an end portion of the engine main body 2 . The chain chamber 8 is attached to the front ends of the cylinder block 3 and the cylinder head 4 .

[0032] Such as figure 1 , figure 2 As shown, the left side edge 9 and the right side edge 10 of the transmission chain chamber 8 are joined to the end of the engine body 2 lower than the cylinder head cover 5 , and the upper side edge 11 is joined to the lower part of the cylinder head cover 5 . . And, if ...

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Abstract

A chain case structure of an engine, wherein, when a chain case is viewed in the crankshaft direction, both side portions of a mount bracket unit in the width direction extend to the left edge portion or the right edge portion of the chain case and the upper edge portion of the chain case, and a fastening portion to an engine main body is provided on the lower portion of the mount bracket portion. A cylinder portion of a hydraulic control valve of a variable valve mechanism is disposed below the fastening portion while the outer peripheral surface of the cylinder portion is mutually coupled to the mount bracket portion. Reinforcement ribs extend downward from the bottom of the mount bracket, across the cylinder portion.

Description

technical field [0001] The invention relates to a transmission chain room structure of an engine, in particular to a transmission chain room structure of an engine equipped with a hydraulic control valve of a variable valve mechanism. Background technique [0002] In the engine of some vehicles, a hydraulic actuator is installed on the camshaft, and the hydraulic actuator is operated by supplying hydraulic pressure from the hydraulic control valve (OCV). This engine is provided with a device for changing the rotation phase of the camshaft relative to the crankshaft. Variable valve train. In this case, the hydraulic control valve is usually installed in a transmission chain chamber for covering the timing chain of the engine. [0003] Patent Document 1: Japanese Patent Laid-Open No. 2008-174113 [0004] Patent Document 2: Japanese Patent Laid-Open No. 2008-215323 [0005] Figure 8 A mounting structure of an engine with a variable valve timing mechanism (variable valve mec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02F7/00F01L1/34
CPCF02F7/0073F01M11/02F01L1/022F01M9/10F02F2007/0078Y10T74/2186F01L1/02
Inventor 竹内研辅黑田惇司
Owner SUZUKI MOTOR CORP