LEMON Manuals: Even more car manuals for everyone
Home >> Isuzu >> 2007 >> i-290 LS, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Introduction (2 Of 2)) >> Description and Operation >> Automatic Transmission Hydraulic Diagrams >> Overdrive Range, Third Gear >> Overrun Clutch Applied - M33 Only

Overrun Clutch Applied - M33 Only

WARNING: This page is about a different variant/trim than selected.

In order to achieve the highest fuel efficiency, the overrun clutch is applied during vehicle coast and braking. With the transmission in overdrive and either second or third gear, the overrun clutch is applied, allowing power to be transferred back through the torque converter to the electric machine and engine.

With the transmission in the D4 range and in either third or second gear, the M33 model applies the overrun clutch in order to maximize fuel efficiency during vehicle coast and braking. In this state, vehicle inertia is used to drive the engine and the electrical machine through the transmission. While in D4 third gear, the 2-3 SS valve is de-energized and the 2-3 shift valve train is in the upshift position. However, D3 oil is not available to apply the overrun clutch. In order to apply the overrun clutch, the spacer plate is used to redirect D2 oil to the overrun clutch circuit through the 2-3 valve train.

In D4 second gear, the 2-3 SS valve is energized and the 2-3 shift valve train is in the downshift position normally allowing overrun clutch circuit to exhaust. With the spacer plate redirecting the D2 oil, the overrun clutch can be applied.

scientia non olet · About LEMON Manuals