Page text (OCR transcript)
7M-GE
7M-GTE
DP Diaphragm
VTV
Air Filter
DP Diaphragm
VTV
Air Filter
EC-2517 EC-2518
Normal Driving
Deceleration
VTV
DP Diaphragm
VTV
DP Diaphragm
EC3440
EC3439
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
