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Upper structure of engine

An engine and head technology, applied in the field of ignition device installation structure, can solve the problems of reduced degree of freedom in the design of cylinder head cover, difficulty in ensuring installation space, etc.

Inactive Publication Date: 2012-04-18
MAZDA MOTOR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the area dedicated to the head of the ignition coil unit on the cylinder head cover increases, making it difficult to secure space for other structures such as an oil filler, and the degree of freedom in design of the cylinder head cover decreases.

Method used

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  • Upper structure of engine
  • Upper structure of engine
  • Upper structure of engine

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Embodiment Construction

[0025] figure 1 It is a top view of main parts of an engine according to an embodiment of the present invention viewed from above, figure 2 A is along figure 1 A sectional view around the combustion chamber of the line I-II, figure 2 B is along figure 1 Cross-sectional view around the combustion chamber on line II-III. As shown in these figures, the engine A is an inline 4-cylinder gasoline engine in which a plurality of cylinders #1 to #4 are arranged in a row from the front end side to the rear end side.

[0026] The engine A is a vehicle-mounted engine, and is mounted in an engine room (not shown) at the front of the vehicle in a horizontal posture along the vehicle width direction in the cylinder bank direction (the direction in which cylinders #1 to #4 are arranged). figure 1 In the figure, the left side corresponds to the front of the vehicle, and an air intake device (not shown) is provided on the front side of the engine. also, figure 1 The right side of t...

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Abstract

Disclosed is an upper structure of an engine having three or more cylinders (#1 -#4) arranged in a row. A first one of a pair of adjacent cylinders among at least three of the cylinders serially arranged in a cylinder row direction is provided with a second spark plug (4) at a position on an opposite side of a second one of the pair of adjacent cylinders, and the second one of the pair of adjacent cylinders is provided with a second spark plug at a position on an opposite side of the first one of the pair of adjacent cylinders. The present invention can provide enhanced flexibility in design of a head cover (10) of the engine.

Description

Technical field [0001] The invention involves the upper structure of the engine and mainly involves the setting structure of the ignition device. Background technique [0002] As a ignition coil for spark plugs for the engine, it is widely used to insert the flames (Stick Type) ignition coil units in the spark plug hole (Plug Hole) from the engine cover cover of the engine.This ignition coil unit has a connector that is exposed to the head of the cylinder cap, and there is a connecter connecting a wire on the head.Therefore, there is no need to unload the cylinder cover to replace the wiring and ignition coil unit.On the other hand, as one of the engine's combustion control technology, there are technical solutions for setting multiple spark plugs on one cylinder (for example, referring to the Japanese Patent Public Bulletin Special Board 2001-234842). [0003] In the multi -point ignition engine, the ignition coil unit must be set up in each spark plug, so the number of ignition...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02P15/08
CPCY02T10/146Y02T10/125Y02T10/12
Inventor 中原康志胡子英策山本刚立石敬一
Owner MAZDA MOTOR CORP