JPS62117235U

JPS62117235U -

Info

Publication number: JPS62117235U
Application number: JP503286U
Authority: JP
Priority date: 1986-01-20
Filing date: 1986-01-20
Publication date: 1987-07-25

Description

[Brief explanation of the drawing]

第１図は、本考案による吸排気バルブの位置を
示す、一気筒当たりの平面配置図；第２図は本考
案によるツインカム軸のカムノーズの位置を示す
図；第３図は本考案による高回転用カム軸に吸気
バルブ作動停止機構を設けた図；第４図は第３図
における―線に沿つた断面図；第５図は第３
図における―線に沿つた部分断面図；第６図
は第３図に示す吸気バルブ作動停止機構に関連し
た油圧ラツシユアジヤスタを示す図；第７図は本
考案の別の実施例に係る高回転用カム軸の図解図
、第８図はシングルカム軸を有する４バルブ内燃
機関に本考案を適用した吸排気バルブ作動機構を
示す図；第９図及び第１０図は本考案による吸排
気管の側面図及び平面図；第１１図は本考案によ
る吸気管の別の実施例を示す図；第１２図は本考
案による吸気管の別の配置実施例を示す斜視図；
第１３図は第１２図における１個の吸気管ユニツ
トを示す図；第１４図は本考案による吸気管内に
設けられる燃料噴射器の位置を示す図；第１５図
は本考案による吸気管内に設けられる燃料噴射器
の別の配置例を示す図。１，２，３……吸気バルブ、４……排気バルブ
、５，６……吸気ポート、７……排気ポート、１
０Ａ，１０Ｂ……カム軸、１２，１３……カム、
３０，３２……サージタンク、１００……吸気バ
ルブ作動停止手段。 Figure 1 is a plan view of each cylinder showing the position of the intake and exhaust valves according to the present invention; Figure 2 is a diagram showing the position of the cam nose of the twin cam shaft according to the present invention; Figure 3 is a high-speed rotation diagram according to the present invention. Fig. 4 is a sectional view taken along the line - in Fig. 3; Fig. 5 is a sectional view of the
FIG. 6 is a diagram showing a hydraulic latch adjuster associated with the intake valve actuation/stopping mechanism shown in FIG. 3; FIG. 7 is a partial sectional view taken along line - in FIG. An illustrative view of a high-speed camshaft; Figure 8 is a diagram showing an intake and exhaust valve operating mechanism to which the present invention is applied to a four-valve internal combustion engine with a single camshaft; Figures 9 and 10 are intake and exhaust pipes according to the present invention. a side view and a plan view; FIG. 11 is a diagram showing another embodiment of the intake pipe according to the present invention; FIG. 12 is a perspective view showing another embodiment of the arrangement of the intake pipe according to the present invention;
FIG. 13 is a diagram showing one intake pipe unit in FIG. 12; FIG. 14 is a diagram showing the position of the fuel injector installed in the intake pipe according to the present invention; FIG. 15 is a diagram showing the position of the fuel injector installed in the intake pipe according to the present invention. The figure which shows another example of arrangement of the fuel injector. 1, 2, 3... Intake valve, 4... Exhaust valve, 5, 6... Intake port, 7... Exhaust port, 1
0A, 10B...camshaft, 12,13...cam,
30, 32... Surge tank, 100... Intake valve operation stop means.

Claims

[Claims for Utility Model Registration] 1. In an internal combustion engine having three intake valves and one exhaust valve per cylinder, one intake valve and one exhaust valve are connected to the same first camshaft. The remaining two intake valves are operated by respective intake cams provided on the same second camshaft, and the remaining two intake valves are operated by respective intake cams provided on the same second camshaft. intake valve operation stopping means is provided for disabling the cam action of the intake cam and rendering the intake valve inoperable;
In the low rotation range, intake and exhaust are performed using only one intake valve and one exhaust valve linked to the first camshaft, and in the high rotation range, all intake and exhaust valves are used for intake and exhaust. intake and exhaust systems for internal combustion engines. 2. The intake and exhaust system for an internal combustion engine according to claim 1, wherein each intake passage leading to each intake valve has substantially the same length.