Ford Global Technolgoies, LLC

Todd Leonard Rachel

Michael John Cullen

Thomas Scott Gee

Patrick Edward Smithberger

Robert Matthew Marzonie

Scott Richard Hughes

Marsha Wendel

Graham Arthur Snow

Michael Thomas Conlin

A method (42) is disclosed for detecting the usage of a heater (31) in a block (30) of an internal combustion engine (11). The method (42) uses temperature measurements of the engine coolant and any ambient air used to create the air/fuel mixture. Based on the difference between the temperatures, the temperatures are weighted and added to create a temperature variable. The temperature variable is used by the electronic engine control module (34) to create an air/fuel mixture which will allow the internal combustion engine (11) to start smoothly. The method (42) operates on this modified temperature; i.e., the temperature variable, which is not the temperature of the engine coolant, nor the ambient air, and allows for the stoichiometric balance of the air/fuel mixture to be modified to optimize performance of the internal combustion engine (11) during a cold start in cold weather with warm engine coolant.

Method for detecting the usage of a heater in a block of an internal

A signal indicating closed throttle position is corrected, through increases and decreases, as a function of an engine's volumetric efficiency, engine speed, application of a vehicle's brake, and the selection of a transmission gear.

Determining throttle position sensor output

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Canton, MI, United States of America

Todd Leonard Rachel