Determining manifold pressure based on engine torque control

Details Determining manifold pressure based on engine torque control Determining manifold pressure based on engine torque control

2005-11-29

2005-11-29

Huynh, Hai (Department: 3747)

Internal-combustion engines

Engine speed regulator

Having condition responsive means with engine being part of...

C123S399000, C073S118040

Reexamination Certificate

active

06968824

ABSTRACT:
A torque control system for an engine includes a throttle plate having an adjustable throttle position to regulate a first mass air flow into the engine. A control module estimates a previous volumetric efficiency of the engine based on a previous manifold absolute pressure (MAP) and determines a current MAP based on the previous volumetric efficiency. The control module calculates a difference between the current MAP and the previous MAP and sets a desired MAP equal to the present MAP when the difference is less than a threshold difference. The control module commands the throttle position based on the desired MAP.

REFERENCES:
patent: 545617 (1895-09-01), Tynes
patent: 5423208 (1995-06-01), Dudek et al.
patent: 6636796 (2003-10-01), Kolmanovsky et al.
patent: 6655201 (2003-12-01), Masson et al.

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