JPH0228526U

JPH0228526U -

Info

Publication number: JPH0228526U
Application number: JP10762888U
Authority: JP
Priority date: 1988-08-17
Filing date: 1988-08-17
Publication date: 1990-02-23

Description

[Brief explanation of drawings]

第１図は本考案の第１実施例のエンジンの平面
図、第２図は第１図のエンジンの断面図、第３図
は第１図の―線に沿う部分断面図、第４図は
第１図の―線に沿う部分断面図、第５図は本
考案の第２実施例のエンジンの平面図、第６図は
第５図のエンジンの断面図、第７図は本考案の第
３実施例のエンジンの平面図、第８図は第７図の
エンジンの断面図、第９図は本考案の第４実施例
のエンジンの平面図、第１０図は第９図のエンジ
ンの断面図、第１１図は第４実施例の連続噴射の
噴射タイミング―ピストン位置関係図、第１２図
は第４実施例の分割噴射の噴射タイミング―ピス
トン位置関係図、第１３図は本考案の第５実施例
のエンジンの斜視図、第１４図は本考案の第６実
施例のエンジンの斜視図、第１５図は第５，６実
施例の時間―混合気量特性図、である。２……燃焼室、３……燃料噴射弁、４……点火
栓、６……ピストン、８……皿部（凹部、凹状燃
焼室）、９……ピストン６の上面（皿部８の表面
、盛上り部の上面を含むピストンの全上側表面）
、９ａ……第１の面、９ｂ……第２の面、１０…
…燃料。 Fig. 1 is a plan view of the engine according to the first embodiment of the present invention, Fig. 2 is a sectional view of the engine shown in Fig. 1, Fig. 3 is a partial sectional view taken along the line - - in Fig. 1, and Fig. 4 is a sectional view of the engine in Fig. 1. FIG. 5 is a plan view of the engine according to the second embodiment of the present invention, FIG. 6 is a sectional view of the engine of FIG. 5, and FIG. 7 is a partial sectional view taken along the line - in FIG. 8 is a plan view of the engine of the third embodiment, FIG. 8 is a sectional view of the engine of FIG. 7, FIG. 9 is a plan view of the engine of the fourth embodiment of the present invention, and FIG. 10 is a sectional view of the engine of FIG. 9. 11 is an injection timing-piston position relationship diagram for continuous injection of the fourth embodiment, FIG. 12 is an injection timing-piston position relationship diagram for split injection of the fourth embodiment, and FIG. 13 is a diagram of the piston position relationship for continuous injection of the fourth embodiment. FIG. 14 is a perspective view of an engine according to the sixth embodiment of the present invention, and FIG. 15 is a time-air mixture quantity characteristic diagram of the fifth and sixth embodiments. 2...Combustion chamber, 3...Fuel injection valve, 4...Ignition plug, 6...Piston, 8...Dish part (recessed part, concave combustion chamber), 9...Top surface of piston 6 (surface of dish part 8) , the entire upper surface of the piston, including the top surface of the ridge)
, 9a...first surface, 9b...second surface, 10...
…fuel.

Claims

[Claims for Utility Model Registration] A combustion chamber; A fuel injection valve that injects fuel directly into the combustion chamber and has a constant fuel injection direction; An ignition plug whose ignition part faces the combustion chamber; The combustion chamber has an uneven upper surface that forms part of a surface defining A first surface that allows the flow to flow along its own surface, and a second surface that is provided at a position where the fuel injected from the fuel injection valve in the latter half of the injection stroke hits and causes the fuel injected in the latter half to collide and scatter. A direct injection spark ignition engine comprising: a piston that moves relative to the fuel injection valve, the piston having a surface and a piston that moves relative to the fuel injection valve.