Allan Joseph Kotwicki - Williamsburg MI John David Russell - Farmington Hills MI
Assignee:
Ford Global Technologies, Inc. - Dearborn MI
International Classification:
F02M 2507 G01F 142
US Classification:
12356816
Abstract:
An exhaust gas recirculation systems directs exhaust gasses from an exhaust manifold to an intake manifold of an internal combustion engine. The exhaust gasses travel from the exhaust manifold, first passing through a flow control valve and then through a measuring orifice before entering the intake manifold. Pressure difference across the orifice is used, along with correction factors based on the pressure difference and pressure downstream of the orifice, to measure and control exhaust gas flow.
John David Russell - Farmington Hills MI Allan Joseph Kotwicki - Williamsburg MI Brian D. Rutkowski - Ypsilanti MI
Assignee:
Ford Global Technologies, Inc. - Dearborn MI
International Classification:
F02D 1300
US Classification:
123348
Abstract:
A method for controlling an engine having both an electronically controlled inlet device, such as an electronic throttle unite, and an electronically controlled outlet device, such as a variable cam timing system is disclosed. The method of the present invention achieves cylinder air charge control that is faster than possible by using an inlet device alone. In other words, the method of the present invention controls cylinder air charge faster than manifold dynamics by coordination of the inlet and outlet device. This improved control is used to improve various engine control functions.
John David Russell - Farmington Hills MI Allan Joseph Kotwicki - Williamsburg MI
Assignee:
Ford Global Technologies, Inc. - Dearborn MI
International Classification:
F02M 100
US Classification:
123442, 123 9015
Abstract:
A method for controlling an engine having at least one cylinder is provided. The engine includes an intake manifold and an outlet control device for controlling flow from the intake manifold into the cylinder. The method includes generating an operator command. The method further includes controlling flow into the cylinder by changing the outlet control device to control flow into the cylinder based on the operator command.
Allan Joseph Kotwicki - Williamsburg MI John D. Russell - Farmington Hills MI
Assignee:
Ford Global Technologies, Inc. - Dearborn MI
International Classification:
G06F 1700
US Classification:
701 54, 180230, 477 33, 477107
Abstract:
A vehicle and engine control system controls engine torque to maintain positive torque at a transmission input to minimize the transmission gears from separating. By maintaining a positive engine torque, operation of the transmission in or through the zero torque, or lash, zone, is minimized. This minimizes poor vehicle driveability that would otherwise result from operation in the lash zone. The control systems uses closed loop control based on a desired and actual turbine speed ratio, or slip ratio, to provide positive torque to the transmission.
Upstream Gauge Sensor, Downstream Absolute Pressure Sensor System
Allan J. Kotwicki - Williamsburg MI Freeman Carter Gates - Bloomfield MI Hossein Bina - Ann Arbor MI
Assignee:
Ford Global Technologies, Inc. - Dearborn MI
International Classification:
G06F 1700
US Classification:
701108, 701102, 701109, 701115, 12356819
Abstract:
A method for estimating pressure surround an engine uses a gauge pressure sensor upstream of an orifice and an absolute pressure sensor downstream of the orifice. In particular, atmospheric pressure can be determined when flow through the orifice is below a predetermined threshold.
Flow Measurement System Providing Indication Of Atmospheric (Barometric) Pressure
Allan J. Kotwicki - Williamsburg MI Freeman Carter Gates - Bloomfield MI Hossein Bina - Ann Arbor MI
Assignee:
Ford Global Technologies, Inc. - Dearborn MI
International Classification:
G06F 1700
US Classification:
701103, 7386152, 701108, 701115
Abstract:
A method for measuring flow through an orifice using an upstream gauge pressure sensor and a downstream absolute pressure sensor determines atmospheric pressure when flow through the orifice is substantially zero, or less than a predetermined value. Then, this estimate, along with the upstream and downstream pressure sensors are used to measure flow through the orifice.
Allan Joseph Kotwicki - Williamsburg MI Paul A. Crosby - Ann Arbor MI Ross Dykstra Pursifull - Dearborn MI
Assignee:
Ford Global Technologies, Inc. - Dearborn MI
International Classification:
F02D 4100
US Classification:
123488, 701115, 701105, 123478, 123480, 123436
Abstract:
A fuel control method uses a MAP sensor output that is encoded to render fueling computations insensitive to microprocessor clock accuracy. The signal output of the MAP sensor is encoded as a pulse width modulated signal, the cylinder air mass is calculated as a function of the encoded MAP signal and the engine is fueled according to the calculated cylinder air mass. By using the same time scale to decode the pulse width of the MAP PWM signal as is used to time injector duration, the time scale becomes irrelevant to the actual fuel/air ratio attained.
John David Russell - Farmington Hills MI Allan Joseph Kotwicki - Williamsburg MI
Assignee:
Ford Global Technologies, Inc. - Dearborn MI
International Classification:
G06F 1300
US Classification:
710110, 123130
Abstract:
A method for controlling an engine having both an electronically controlled inlet device, such as an electronic throttle unit, and an electronically controlled outlet device, such as a variable cam timing system is disclosed. The method of the present invention achieves cylinder air charge control that is faster than possible by using an inlet device alone. In other words, the method of the present invention controls cylinder air charge faster than manifold dynamics by coordination of the inlet and outlet device. This improved control is used to improve various engine control functions.
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