JPS63104680U

JPS63104680U -

Info

Publication number: JPS63104680U
Application number: JP19886086U
Authority: JP
Priority date: 1986-12-26
Filing date: 1986-12-26
Publication date: 1988-07-06

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の第１実施例の平面図、第２図
は同上実施例における各吸気弁の動作時期及びリ
フトと、燃料噴射弁の噴射時期とを示す線図、第
３図は本考案の第２実施例の平面図、第４図は本
考案の第３実施例の平面図、第５図は従来の複吸
気弁エンジンの平面図である。１……第１サージタンク、２……第１スロツト
ル弁、３……第１吸気ポート、４……第２吸気ポ
ート、５……第２サージタンク、６……第２スロ
ツトル弁、７……第３吸気ポート、１０……第１
吸気弁、１１……燃焼室、１２……第２吸気弁、
１３……吸気制御弁、１４……第３吸気弁、１５
……燃料噴射弁、１６……点火栓、２０……デリ
バリーパイプ、２１……プレツシヤレギユレータ
、２２……バキユームパイプ、２３……負圧取入
れ口。 Fig. 1 is a plan view of the first embodiment of the present invention, Fig. 2 is a diagram showing the operation timing and lift of each intake valve and the injection timing of the fuel injection valve in the same embodiment, and Fig. 3 is a diagram of the present invention. FIG. 4 is a plan view of a second embodiment of the invention, FIG. 4 is a plan view of a third embodiment of the invention, and FIG. 5 is a plan view of a conventional dual intake valve engine. DESCRIPTION OF SYMBOLS 1...First surge tank, 2...First throttle valve, 3...First intake port, 4...Second intake port, 5...Second surge tank, 6...Second throttle valve, 7... ...3rd intake port, 10...1st
Intake valve, 11... combustion chamber, 12... second intake valve,
13...Intake control valve, 14...Third intake valve, 15
... Fuel injection valve, 16 ... Ignition plug, 20 ... Delivery pipe, 21 ... Pressure regulator, 22 ... Vacuum pipe, 23 ... Negative pressure intake port.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

燃焼室へ供給する吸気にスワールを発生させる
常時開放の第１の吸気ポートと、エンジンの高負
荷運転域においてのみ開放する吸気制御弁を有し
かつ燃焼室内にストレートの吸気を供給する第２
の吸気ポートとを具備し、前記第１及び第２の吸
気ポートのいずれか一方に燃料噴射弁を設けるか
又は燃料噴射弁を有する第３の吸気ポートを設け
、これら吸気ポートのうち燃料噴射弁を有してい
ない吸気ポートの上流側を第１のサージタンクに
連通させ、燃料噴射弁を有する吸気ポートの上流
側を第２のサージタンクに連通させ、前記第１の
サージタンクに第１のスロツトル弁を、前記第２
のサージタンクに第２のスロツトル弁をそれぞれ
設け、エンジンの部分負荷時において、前記第１
のスロツトル弁と前記第２のスロツトル弁の開度
を異なる様設定し、前記燃料噴射弁に燃料を供給
する燃料噴射ポンプにはプレツシヤレギユレータ
を具えたデリバリーパイプを接続した複吸気弁エ
ンジンにおいて、前記プレツシヤレギユレータを
制御するための負圧を供給するポートの負圧取入
れ口を、前記第２のサージタンクの前記第２のス
ロツトル弁の下流側に開口したことを特徴とする
複吸気弁エンジン。 A first intake port that is always open to generate a swirl in the intake air supplied to the combustion chamber, and a second intake port that has an intake control valve that opens only in a high-load operating range of the engine and that supplies straight intake air into the combustion chamber.
an intake port, and one of the first and second intake ports is provided with a fuel injection valve, or a third intake port having a fuel injection valve is provided, and one of these intake ports has a fuel injection valve. The upstream side of the intake port not having a fuel injection valve is communicated with a first surge tank, the upstream side of the intake port having a fuel injection valve is communicated with a second surge tank, and the first surge tank is connected to a first surge tank. the second throttle valve.
A second throttle valve is provided in each of the surge tanks, and when the engine is under partial load, the first
the throttle valve and the second throttle valve are set to have different opening degrees, and a fuel injection pump that supplies fuel to the fuel injection valve is connected to a delivery pipe equipped with a pressure regulator. In the engine, a negative pressure intake port of a port for supplying negative pressure for controlling the pressure regulator is opened downstream of the second throttle valve of the second surge tank. A dual intake valve engine.