Daimlerchrysler Corporation

Chrysler Group LLC

Paul R Arlauskas

Kerry D Franks

Jeremy M Smith

Iqbal A Chowdhury

Gregory L Ohl

Michael J Prucka

Yi Cheng

Zhong Li

James W Yip

P Brian McGrath

Daniel B Diebel

Chad Dalberg

A method of controlling a vehicle powertrain having an automatic transmission coupled to an engine through a lock-up torque converter includes determining when a torque converter unlock is imminent during a deceleration fuel shut-off event, and delaying the resumption of fuel flow to the engine for a calibratable time period to reduce the likelihood of an undesirable increase in engine output torque when the torque converter has not fully transitioned to an unlocked state. The method also includes determining whether one or more breakout conditions exist that require enabling fuel flow to the engine and, perhaps, triggering an active unlocking of the lock-up torque converter.

Method and code for controlling powertrain with lockup torque converter

A method for characterizing an air flow target within an internal combustion engine. The method includes determining an air mass flow rate target, determining an engine speed term, and processing these terms to obtain an air flow target. The air flow target can be used as an input for vehicle controllers including those for controlling pressurized induction systems.

Air flow target determination

A control system for controlling the fueling of an engine assembly. The engine assembly includes an internal combustion engine, a fuel control system, a fuel vapor storage canister and a purge control system for purging the fuel vapor storage canister. The control system includes a purge fuel vapor measuring device for measuring an amount of purge fuel vapor flowing from the vapor storage canister to the internal combustion engine, a fuel corruption estimating device for estimating an amount of fuel corruption as a function of the amount of purge fuel vapor flowing from the vapor storage canister to the internal combustion engine and a controller for adapting the control of the internal combustion to the estimate of the amount of fuel corruption. A method for fueling an engine assembly having an internal combustion engine is also provided.

Full range fuel shift determination

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Walled Lake, MI, United States of America

Paul R Arlauskas