Iqbal A Chowdhury

US Patent:

8374759, Feb 12, 2013

Filed:

Jul 1, 2009

Appl. No.:

12/496636

Inventors:

Paul R. Arlauskas - Saline MI, US
P. Brian McGrath - Manchester MI, US
Zhong Li - Novi MI, US
Chad Dalberg - Tipton MI, US
Iqbal A. Chowdhury - Ann Arbor MI, US
Jeremy Smith - Farmington MI, US

Assignee:

Chrysler Group LLC - Auburn Hills MI

International Classification:

G06F 7/00

US Classification:

701 54

Abstract:

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.

US Patent:

6443138, Sep 3, 2002

Filed:

Jul 31, 2000

Appl. No.:

09/629487

Inventors:

Kerry D Franks - Chelsea MI
Paul R Arlauskas - Walled Lake MI
Jeremy M Smith - Farmington MI
Iqbal A Chowdhury - Madison Heights MI

Assignee:

DaimlerChrysler Corporation - Auburn Hills MI

International Classification:

F02M 3302

US Classification:

123698, 123520

Abstract:

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.