Unlock instant, AI-driven research and patent intelligence for your innovation.

Internal combustion engine

A technology for internal combustion engines and exhaust ports, applied in the direction of engine components, machines/engines, mechanical equipment, etc., can solve problems such as the impact of exhaust gas, overheating of the opening of the joint of the exhaust port, and the impact of exhaust gas emissions, and achieve the effect of preventing contact

Inactive Publication Date: 2009-02-25
TOYOTA JIDOSHA KK
View PDF1 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, if the exhaust ports of all cylinders are combined together in the cylinder head, the pressure pulsation in each cylinder affects the discharge of exhaust gases from other cylinders, i.e. the exhaust gases from different cylinders affect each other
In addition, since exhaust gas discharged to all exhaust ports all flows through the opening of the exhaust port joint, the opening of the exhaust port joint can be overheated

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
  • Internal combustion engine
  • Internal combustion engine
  • Internal combustion engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] figure 1 and 2 A one-piece cylinder head 1 cast from aluminum alloy is shown. exist figure 1 The circles indicated by dotted lines in , show the arrangement of the first cylinder #1, the second cylinder #2, the third cylinder #3 and the fourth cylinder #4. therefore, figure 1 The internal combustion engine shown in is an in-line four-cylinder internal combustion engine and includes a cylinder head 1 . exist figure 1 In , reference numeral 2 denotes a valve port opened / closed by an intake valve, respectively, and reference numerals respectively denote a valve port opened / closed by an exhaust valve. Thus, each of the cylinders #1, #2, #3 and #4 is provided with a pair of intake valves and a pair of exhaust valves.

[0014] The cylinder head 1 actually has a coolant passage formed therein extending along a complicated path, a portion where a valve train is supported, a portion where a spark plug is inserted, a portion where a fuel injection valve is inserted, and the...

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

Exhaust ports (8 and 9) of paired middle cylinders (#2 and #3) in which respective power strokes take place with one intervening power stroke therebetween are joined together in a cylinder head (1) to form a joint exhaust port (11). Exhaust ports (7 and 10) of paired end cylinders (#1 and #4) in which respective power strokes take place with one intervening power stroke therebetween extend from the respective cylinders (#1 and #4) toward the joint exhaust port (11). Then, on the respective sides of the joint exhaust port (11), the exhaust ports (7 and 10) extend along the joint exhaust port (11) to a side wall face (5) of the cylinder head (1) while the exhaust ports (7 and 10) and the joint exhaust port (11) are separated from each other by respective thin walls (12 and 13).

Description

technical field [0001] The invention relates to an internal combustion engine. Background technique [0002] For example, Japanese Patent Application Publication No. 2003-176722 (JP-A-2003-176722) describes an in-line four-cylinder internal combustion engine. In said internal combustion engine, the exhaust manifold extending from the cylinder placed at one end to the cylinder placed at the other end is fitted on the side wall surface of the cylinder head, and the exhaust ports of these cylinders placed at the opposite end are opened to exhaust gas. Manifold, and the exhaust ports of the two cylinders placed in the middle are combined to open into the exhaust manifold. [0003] However, such an exhaust manifold leads to inconveniences such as eg large dimensions, so that the exhaust manifold takes up a lot of space in the engine compartment. In order to minimize this inconvenience, the exhaust ports of all the cylinders are combined together inside the cylinder head to form...

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): F01N7/10F01N7/18F02F1/42F01N13/10F01N13/18
CPCF01N2470/14F01N2470/00F01N2260/10F01N13/1805F01N2260/06F01N13/10F02F1/4214F02F1/42F01N13/18
Inventor 永渊博树
Owner TOYOTA JIDOSHA KK