Dash Pot Dp System Age only

Dash Pot 4runner
EC2792
1992 Toyota 4runner Dashpot

To reduce HC and CO emissions, when decelerating the dash pot opens the throttle valve slightly more than at idle. This causes the air-fuel mixture to burn completely.

Condition

Diaphragm

VTV

Throttle Valve

Idling

Pushed in by return force of throttle valve

CLOSED

Idle speed position

Normal driving

Pushed out by diaphragm spring

OPEN

High speed position

Deceleration

Pushed in by return force of throttle valve

CLOSED

Slightly opens and then slowly closes to idle position

Separater

Filter

Separater

Filter

Toyota 4runner Dash Pot

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