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ed_ma61 Forums Junkie Location: Lost in the K hole Registered: May 2002	Re: Knock Sensor Circuit Design ... Tue, 22 July 2003 13:26 ACIS: Acoustic Control Induction System Quote: The Acoustic Control Induction System (ACIS) is used in the 7M-GE, 3VZ-FE and 2JZ-GE engines. As with the T-VIS system, the purpose of this system is to improve engine torque throughout the engine RPM range. The system consists of the same basic components as T-VIS and operates similarly. The ACIS system uses a simgle intake air chamber which effectively changes intake runner length as it opens and closes. ACIS Air Control Valve The main difference between T-VIS and ACIS is the single butterfly air control valve used in the ACIS system. This valve is located in the center of the intake manifold plenum and is designed to divide the plenum chamber into two sections, a front chamber and a rear chamber. By dividing the manifold plenum into two chambers, the effective manifold runner length can be controlled by opening and closing the valve. The ECU controls the position of the intake air control valve based on input signals from the throttle angle (VTA) and engine RPM (Ne). The VSV, which controls the vacuum supply to the actuator, is normally closed and passes vacuum to the actuator when it is energized by the ECU. [Updated on: Tue, 22 July 2003 13:29] [Report message to a moderator]

	Subject	Poster	Date
	Knock Sensor Circuit Design ...	ed_ma61	Tue, 22 July 2003 04:50
	Re: Knock Sensor Circuit Design ...	Cool1	Tue, 22 July 2003 05:41
	Re: Knock Sensor Circuit Design ...	ed_ma61	Tue, 22 July 2003 05:45
	Re: Knock Sensor Circuit Design ...	roger	Tue, 22 July 2003 05:46
	Re: Knock Sensor Circuit Design ...	ed_ma61	Tue, 22 July 2003 05:52
	Re: Knock Sensor Circuit Design ...	oldcorollas	Tue, 22 July 2003 05:58
	Re: Knock Sensor Circuit Design ...	ed_ma61	Tue, 22 July 2003 06:10
	Re: Knock Sensor Circuit Design ...	sideshow	Tue, 22 July 2003 06:13
	Re: Knock Sensor Circuit Design ...	ed_ma61	Tue, 22 July 2003 06:26
	Re: Knock Sensor Circuit Design ...	Cool1	Tue, 22 July 2003 06:39
	Re: Knock Sensor Circuit Design ...	ed_ma61	Tue, 22 July 2003 06:52
	Re: Knock Sensor Circuit Design ...	ed_ma61	Tue, 22 July 2003 06:58
	Re: Knock Sensor Circuit Design ...	Cool1	Tue, 22 July 2003 07:03
	Re: Knock Sensor Circuit Design ...	ed_ma61	Tue, 22 July 2003 07:08
	Re: Knock Sensor Circuit Design ...	oldcorollas	Tue, 22 July 2003 08:10
	Re: Knock Sensor Circuit Design ...	ed_ma61	Tue, 22 July 2003 10:01
	Re: Knock Sensor Circuit Design ...	Cool1	Tue, 22 July 2003 09:00
	Re: Knock Sensor Circuit Design ...	Cool1	Tue, 22 July 2003 07:01
	Re: Knock Sensor Circuit Design ...	sideshow	Tue, 22 July 2003 12:14
	Re: Knock Sensor Circuit Design ...	ed_ma61	Tue, 22 July 2003 12:37
	Re: Knock Sensor Circuit Design ...	Allan	Tue, 22 July 2003 12:41
	Re: Knock Sensor Circuit Design ...	ed_ma61	Tue, 22 July 2003 12:55
	Re: Knock Sensor Circuit Design ...	sideshow	Tue, 22 July 2003 12:43
	Re: Knock Sensor Circuit Design ...	ed_ma61	Tue, 22 July 2003 13:02
	Re: Knock Sensor Circuit Design ...	Allan	Tue, 22 July 2003 13:12
	Re: Knock Sensor Circuit Design ...	ed_ma61	Tue, 22 July 2003 13:26
	Re: Knock Sensor Circuit Design ...	ed_ma61	Tue, 22 July 2003 14:26
	Re: Knock Sensor Circuit Design ...	humble	Tue, 22 July 2003 17:22
	Re: Knock Sensor Circuit Design ...	ed_ma61	Wed, 23 July 2003 00:17
	Re: Knock Sensor Circuit Design ...	Norbie	Wed, 23 July 2003 00:14
	Re: Knock Sensor Circuit Design ...	Allan	Wed, 23 July 2003 02:19
	Re: Knock Sensor Circuit Design ...	ed_ma61	Wed, 23 July 2003 03:02
	Re: Knock Sensor Circuit Design ...	E30-323ti	Wed, 23 July 2003 03:11
	Re: Knock Sensor Circuit Design ...	ed_ma61	Wed, 23 July 2003 03:20
	Re: Knock Sensor Circuit Design ...	E30-323ti	Wed, 23 July 2003 03:34
	Re: Knock Sensor Circuit Design ...	ed_ma61	Wed, 23 July 2003 03:40
	Re: Knock Sensor Circuit Design ...	ed_ma61	Wed, 30 July 2003 11:48
	Re: Knock Sensor Circuit Design ...	-Mark-	Wed, 30 July 2003 13:22

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