Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Four stroke top placed cam-type engine

An overhead cam, four-stroke technology, which is applied to engine components, machines/engines, valve devices, etc., can solve the problem of unfavorable heat dissipation of the lightweight cylinder head of the engine, and achieve the advantages of cooling, improving heat dissipation, and reducing sealing surfaces. Effect

Active Publication Date: 2007-04-11
WUXI KIPOR POWER CO LTD
View PDF1 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This structure is unfavorable to the light weight of the engine and the heat dissipation of the cylinder head

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Four stroke top placed cam-type engine
  • Four stroke top placed cam-type engine
  • Four stroke top placed cam-type engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: (the intake and exhaust valves share one cam)

[0025] The invention is a single-cylinder air-cooled overhead cam gasoline engine. The engine main parts body 1, crankcase cover 2 and cylinder head cover 3 are molded by aluminum alloy or magnesium alloy. The body 1 and the crankcase cover 2 are obliquely divided at the joint surface 4 and connected with multiple sets of bolts 5 . The connecting surface 4 of the body 1 and the crankcase cover 2 passes through the crankshaft axis A1-A1 and the cylinder axis B1-B1. The rotation of crankshaft 6 is to pass through bearing 7 and bearing 8 at both ends, bearing 7 is supported on the body machine 1, and bearing 8 is supported on the crankcase cover 2.

[0026] The engine body 1 is formed by the cylinder head 44, the upper crankshaft half case 46, the cylinder barrel 9, and the chain chamber 45 by bolts. The cylinder head cover 3 is fixed on the cylinder head 44, and the piston 10 is installed in the cylinder barre...

Embodiment 2

[0032] Embodiment two: (intake and exhaust valve use a cam respectively)

[0033] The engine body 1 is combined to form a whole by the cylinder head 44, the cylinder barrel 9 that accommodates the piston, the chain chamber 45, and the upper crankshaft half case 46. The top of the cylinder barrel 9 on the body forms a combustion chamber 11, and the spark plug 48 is used here for timing. Fire into the combustion chamber.

[0034] The upper part of the body 1 also has an air intake channel 14 and an exhaust channel 15 formed by casting in advance, and the air intake channel 14 and the exhaust channel 15 are respectively located on both sides of the cylinder axis B1-B1. One end of the intake duct 14 leads to the combustion chamber 11, and an intake valve seat 16 is press-fitted at the junction, and the other end forms a plane outside the body 1 . One end of the exhaust passage 15 also leads to the combustion chamber 11, and an exhaust valve seat 17 is press-fitted at the junction...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention relates to one kind of four stroke top placed cam type engine, and belongs to the field of power plant technology. The engine includes mainly an engine body comprising integrated cylinder head, cylinder barrel, upper crankshaft half box and chain chamber, a combustion chamber formed on the cylinder barrel; an inlet valve and an exhaust valve separately on two sides of the cylinder axis; a cam shaft between the inlet valve and the exhaust valve; and a rocking arm shaft between the inlet valve rocking arm and the exhaust valve rocking arm. The present invention has reduced sealing area, light weight, improved heat dissipation, reduced size and raised reliability.

Description

technical field [0001] The invention relates to a four-stroke overhead cam engine, belonging to the technical field of power devices. Background technique [0002] At present, for a general four-stroke overhead cam engine, the cylinder head and the body are respectively cast into a split structure. The cylinder head is installed on the body with bolts, and the camshaft is installed on the cylinder head. The number of parts is large, the number of sealing surfaces is large, and the number of man-hours for processing is increased. Parts such as gaskets must be added to the sealing surface to increase the dependence of the seal, thereby increasing the wall thickness of the cylinder part. In addition, single overhead camshafts are generally used to increase the height of the engine, and double overhead camshafts are used to increase the width of the cylinder head. This kind of structure is unfavorable to the lightweight of the engine and the heat dissipation of the cylinder hea...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F01L1/12F01L1/26
CPCF01L1/053F01L2001/0535F01L1/181
Inventor 肖亨琳
Owner WUXI KIPOR POWER CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com