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Overhead cam engine

A top-mounted engine technology, applied in the direction of engine components, machines/engines, valve devices, etc., can solve the problem of single cam with large workload, small lateral size, difficulty in meeting the requirements of reasonable gas distribution phase of intake valve and exhaust valve, etc. question

Inactive Publication Date: 2007-08-08
WUXI SOUTHEAST VEHICLE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the cam engine with a single cam structure has a large single cam workload and it is difficult to meet the reasonable timing requirements for the opening and closing of the intake valve and exhaust valve, the applicant conducted research and improvement to provide another overhead cam engine , the working load of the cam is small, and it is easy to achieve a reasonable gas distribution phase when the intake valve and exhaust valve are opened and closed, and the head of the engine also has a small transverse dimension.

Method used

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Embodiment Construction

[0011] See Fig. 1, the present invention comprises a cylinder block 1, and the bottom of cylinder block 1 is connected crankcase, and in crankcase and cylinder block 1, crankshaft 3 is connected piston 5 by connecting rod device; Cylinder block 1 comprises cylinder outer wall 1-1 And the cylinder liner 1-5 integrally cast with it, the bearing bush 1-3 is pressed on the outer wall 1-1 of the cylinder, the inclined surface 1-4 of the cylinder block 1 is combined with the inclined surface 2-2 of the oil base 2 to form a crankcase, And connect with screw 15; The top of cylinder block 1 is connected with the cylinder head 1-2 that is integrated with it;

[0012] The two shaft diameters 3-1 and 3-2 of the crankshaft 3 are respectively supported on the bearing bush 1-3 of the cylinder block 1 and the bearing bush 2-1 of the oil base 2; the flywheel 16 is fixed on one end of the crankshaft 3 in a conventional manner;

[0013] One end of the piston 5 and the connecting rod 4 is connect...

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Abstract

The invention relates to an overhead cam engine. For there is a heavy working load of prior cam engine and intake and outtake valves can not achieve the valve phase demand when they are opened and closed, the design is improved. The invention comprises cylinder body, cylinder head and crankshaft box. The crankshaft is connected with the piston through a linkage device. It is characterized in that at the position of cylinder head, intake and outtake valves are installed in parallel; an outtake crankshaft and an outtake cam are set between intake and outtake valves; the upper end of cylinder head is connected with a support and on the support intake camshaft and intake cam are set; cam faces of intake and outtake cams control intake and outtake valves opening or closing by a rocker; the outtake camshaft is connected with the crankshaft by the transmission device and the intake camshaft is connected with the outtake camshaft by the transmission device. The working load of invention is small. When intake and outtake valves are opened and closed the reasonable valve phase can be achieved.

Description

(1) Technical field [0001] The invention relates to a cam type gasoline engine, in particular to a cam type gasoline engine with a cam placed on the top of the engine. (2) Background technology [0002] Existing overhead cam engine, it comprises a cylinder block, and the bottom of cylinder block is connected crankcase, and in crankcase and cylinder body, crankshaft is connected piston by connecting rod device; In the top of cylinder block, be connected with integrated cylinder head, cylinder The space between the bottom surface of the head and the piston is a combustion chamber, and an intake valve, an exhaust valve and a valve control device for opening and closing of both are installed above the combustion chamber at the position of the cylinder head. The valve control device is a cam control device. The camshaft and the cam are installed on the cylinder head. The crankshaft drives the cam to rotate through the transmission device. The valve control rod of the exhaust val...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L1/12F01L1/18F01L1/06
CPCF01L1/185F01L1/053
Inventor 钱东高
Owner WUXI SOUTHEAST VEHICLE TECH
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