ORFC Setup

ORFC Setup

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ORFC TP/PP Select

Selects which input is used to control the ORFC

0: Throttle Position 1

1: Pedal Position 

ORFC TP/PP Threshold

When the TPS 1 or PPS value is below this setting the Over Run Fuel Cut can become active.  

** Follows ORFC TP/PP Select

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Post Start Delay

Delay after the engine has been started before ORFC can become active

Ignition Retard

Ignition Retard from the total ignition advance when ORFC is active

Ignition Recovery rate

Rate which the ignition Overrun Fuel Cut Ignition Retard is decayed to 0 once the engine has recovered. 

Typical : 10 deg / sec

Engine Temperature Lockout

Engine Temperature that must be exceeded before ORFC can become active

Speed Channel

Used to define how the “Speed Lockout” is used.  

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0: OFF

1: Drive Speed

2: Ground Speed

3: Drive Speed Front L

4: Drive Speed Front R

5: Drive Speed Rear L

6: Drive Speed Rear R

7: Undriven Speed Front L

8: Undriven Speed Front R

9: Undriven Speed Rear L

10: Undriven Speed Rear R

11: Front Axle Speed

12: Rear  Axle Speed

13: Vehicle Speed

14: Engine Speed

15: Input Shaft Speed

16: Output Shaft Speed

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** Speed inputs must be defined and properly calibrated under “Input Setup”

Speed Lockout Range Lo

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Speed below which ORFC cannot become active\

Speed Lockout Range Hi

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Speed above which ORFC cannot become active\

Speed Range Hysteresis 

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Hysteresis to prevent Overrun Fuel Cut becoming active on the threshold of a speed lockout value.

Example : A speed Lockout Range Hi setting of 60 and a Speed Range Hysteresis setting of 5 will not allow Overrun Fuel Cut to become active until Speed has reduced to 55 after being over 60.

ORFC Cut Ramp Time

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Used to progressively increase the cut from 0% to 100% over the specified time.

Allows for a smoother transition into the Fuel Cut.