JPS5939738U - cylinder number control engine - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第１図は従来例の構成断面図、第２図は本考案の実施例
を示す要部構成断面図、第３図は本考案のエンジン回転
数に応じて設定された吸気マニホールド負圧の特性図、
第４図は同じくエンジン回転数と負荷に応じて設定され
た吸気マニホールド負圧の特性図、第５図は本考案の他
の実施例を示す要部構成断面図、第６図はその新気導入
弁の開度特性図である。 １・・・絞弁、２・・・吸気通路、５・・・排気通路、
８・・・エアフローメータ、９・・・絞弁スイッチ、１
１・・・遮断弁、１２・・・新気供給通路、１３・・・
新気導入弁、１４、・１５・・・触媒、２５・・・回転
センサ、２６・・・吸気マニホールド、２７・・・ダイ
ヤフラム装置、２８・・・第１のダイヤフラム部、２９
・・・第２のダイヤフラム部、３９．４０・・・三方向
電磁弁、４１・・・制御回路、４２・・・ダイヤフラム
装置、４４．４５・・・電磁弁、４６・・・オリフィス
。Fig. 1 is a cross-sectional view of the configuration of a conventional example, Fig. 2 is a cross-sectional view of the main part of the embodiment of the present invention, and Fig. 3 is the characteristic of the negative pressure of the intake manifold set according to the engine speed of the present invention. figure,
Figure 4 is a characteristic diagram of the intake manifold negative pressure similarly set according to the engine speed and load, Figure 5 is a sectional view of the main part configuration showing another embodiment of the present invention, and Figure 6 is the fresh air. It is an opening degree characteristic diagram of an introduction valve. 1... Throttle valve, 2... Intake passage, 5... Exhaust passage,
8... Air flow meter, 9... Throttle valve switch, 1
1... Shutoff valve, 12... Fresh air supply passage, 13...
Fresh air introduction valve, 14, 15... Catalyst, 25... Rotation sensor, 26... Intake manifold, 27... Diaphragm device, 28... First diaphragm part, 29
... Second diaphragm part, 39.40 ... Three-way solenoid valve, 41 ... Control circuit, 42 ... Diaphragm device, 44.45 ... Solenoid valve, 46 ... Orifice.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] エンジン負荷状態を検出する手段と、軽負荷域等に一部
気筒への燃料と新気の供線を遮断する遮断弁と、この気
筒の休止時に遮断弁下流に絞弁をバイパスして新気を導
く新気導入弁とを設けた多気筒エンジンにおいて、エン
ジン回転数を検出する手段と、この検出回転数や上記検
出負荷に応じて上記休止時に新気導入弁の開度を増減さ
せ当該気筒に対応する吸気マニホールド負圧ならびに流
入新気量を制御する手段とを設けたことを特徴とする気
筒数制御エンジン。A means for detecting the engine load condition, a cutoff valve that cuts off the supply of fuel and fresh air to some cylinders in light load ranges, etc., and a cutoff valve that bypasses the throttle valve downstream of the cutoff valve to supply fresh air when the cylinder is stopped. In a multi-cylinder engine, a means for detecting the engine rotational speed and a means for detecting the engine rotational speed and increasing or decreasing the opening degree of the fresh air introduction valve during the above-mentioned rest period according to the detected rotational speed and the detected load are provided. An engine with a controlled number of cylinders, characterized in that it is provided with means for controlling an intake manifold negative pressure and an amount of inflowing fresh air corresponding to the above.