JPH0440124U

JPH0440124U -

Info

Publication number: JPH0440124U
Application number: JP8129890U
Authority: JP
Priority date: 1990-07-31
Filing date: 1990-07-31
Publication date: 1992-04-06

Description

[Brief explanation of the drawing]

第１図は本考案の多気筒エンジンの吸気装置の
制御系を含む側面断面図、第２図は一部断面した
第１図の矢視図、第３図は第２図の−断面
図、第４図は本考案の第１実施例のフローチヤー
ト図、第５図は第１実施例のエンジン回転数に対
する体積効率特性図、第６図は本考案の第２実施
例のフローチヤート図、第７図は第２実施例のエ
ンジン回転数に対する体積効率特性図である。４……第１吸気系、５……第２吸気系、６ｂ…
…スロツトルボデイ、７……スロツトルバルブ、
９……第１吸気通路、１０……第２吸気通路、１
１……第１制御弁、１２……第２制御弁、１３…
…第１リンク装置、１４……第１アクチユエータ
、１５ａ……第１チヤンバ、１５ｂ……第２チヤ
ンバ、１５ｃ……第１連通路、１６……第１切換
弁、１７ａ……第３チヤンバ、１７ｂ……第４チ
ヤンバ、１７ｃ……第２連通路、１８……第２切
換弁、３０……第２リンク装置、２１……第２ア
クチユエータ、２１_１ａ〜２２_６ａ……第１吸気
マニホールド、２２_１ｂ〜２２_６ｂ……第２吸気
マニホールド、３２……第１電磁弁、３３……第
２電磁弁、４０……制御ユニツト。 FIG. 1 is a side sectional view including a control system of the intake system of a multi-cylinder engine of the present invention, FIG. 2 is a partially sectional view taken along the arrow in FIG. FIG. 4 is a flowchart of the first embodiment of the present invention, FIG. 5 is a volumetric efficiency characteristic diagram with respect to engine speed of the first embodiment, and FIG. 6 is a flowchart of the second embodiment of the present invention. FIG. 7 is a volumetric efficiency characteristic diagram with respect to engine speed of the second embodiment. 4...First intake system, 5...Second intake system, 6b...
... Throttle body, 7... Throttle valve,
9...First intake passage, 10...Second intake passage, 1
1...First control valve, 12...Second control valve, 13...
...First link device, 14...First actuator, 15a...First chamber, 15b...Second chamber, 15c...First communication path, 16...First switching valve, 17a...Third chamber, 17b... Fourth chamber, 17c... Second communication path, 18... Second switching valve, 30... Second link device, 21... Second actuator, 21 _1a to 22 _6a ... First intake manifold, 22 _1b to 22 _6b ... second intake manifold, 32 ... first solenoid valve, 33 ... second solenoid valve, 40 ... control unit.

Claims

[Scope of Claim for Utility Model Registration] (1) For two cylinder groups whose ignition cylinder order is not consecutive, the first
The throttle body has first and second chambers that communicate with each other via an intake manifold, one end side of the first and second chambers communicates with a throttle body provided with a throttle valve via a first intake passage, and the first and second chambers communicate with each other via a first intake passage. , second
a first switching control valve having a first switching control valve on the other end side of the chamber;
In an intake device in which a first intake system is configured by forming a communication passage, third and fourth chambers forming a second intake system and third and fourth chambers are arranged symmetrically with the first intake system. A second intake passage communicating with the throttle body and a second intake manifold communicating with each cylinder of the two cylinder groups are provided in the third and fourth chambers. , the passage inner diameter and passage length of the first intake passage are set to be smaller or the same diameter, longer or the same length than the second intake passage, and the passage inner diameter and passage length of the first intake manifold are set to be smaller than the second intake passage. The intake manifold is set to have a smaller diameter and longer than the intake manifold, a first control valve is provided in the first intake passage, a second control valve is provided in the second intake passage, and the first
The first and second control valves are interlocked and connected to a first actuator via a first link device so that the opening and closing of the second control valve are reversed, and a first switching valve is connected to the first communication path. A second switching valve is provided in the second communication path, and the first and second
In order to open and close the switching valve in the same manner, the first
An intake system for a multi-cylinder engine, characterized in that a second switching valve is operatively connected to a second actuator via a second link device. (2) The first and second actuators are
The multi-cylinder engine according to claim 1, characterized in that the multi-cylinder engine is connected to a control unit that communicates with or is connected to a solenoid valve and selectively controls switching of the first and second solenoid valves with respect to the engine rotation speed. intake device.