Fca US LLC

Brett Schubring

Michael A Smith

Robert Joseph Jerger

James J Daley

Michael T Vincent

Joseph M Dekar

Jeffrey P Wuttke

Wei-Jun Yang

Andrew Brocker

Craig L Dimaggio

Michael George Zammit

Kiran Premchand

Homayoun Ahari

Xuefei Chen

Lydell S Powell

Brian E Hallgren

A hybrid electric vehicle (HEV) includes an internal combustion engine, a motor/generator configured to drive the internal combustion engine or be driven by the internal combustion engine to generate electricity to charge a high voltage battery and/or drive one or more electric traction motors, and an exhaust aftertreatment system having a gasoline particulate filter (GPF). A control system includes a controller for monitoring and performing a regeneration operation of the GPF. The controller is programmed to determine the GPF needs to be regenerated, and operate the internal combustion engine in fuel shut-off to generate a flow of air to the GPF to initiate a GPF regeneration.

Hybrid vehicle gasoline particulate filter regeneration

A diagnostic system and method for diagnosing the performance of a particulate matter (PM) filter of an exhaust system each involve receiving, by a controller from at least one sensor, a gas component measurement of exhaust gas flowing through the exhaust system and the PM filter. The controller calculates a conversion efficiency of the gas component by the PM filter and compares the calculated conversion efficiency to a predetermined conversion efficiency threshold indicative of an expected conversion efficiency of a flow-through catalyst. The controller then determines whether the PM filter is cracked or damaged based on the comparison between the calculated conversion efficiency and the predetermined conversion efficiency threshold.

Particulate matter filter diagnostic techniques based on exhaust gas analysis

An exhaust gas flow concentration system for a catalyst includes an inlet that receives a flow of exhaust gas from an exhaust pipe of an exhaust system, a stationary tube in communication with the inlet and disposed upstream from the catalyst, and an extension tube in communication with the stationary tube and disposed upstream from the catalyst, where the extension tube includes a cross-sectional area less than a cross-sectional area of the catalyst. A displacement device is coupled to the extension tube and is configured to (i) displace the extension tube relative to the stationary tube downstream towards the catalyst as a temperature in the exhaust system decreases away from a light-off temperature of the catalyst and (ii) retract the extension tube relative to the stationary tube upstream away from the catalyst when the temperature in the exhaust system reaches the light-off temperature of the catalyst.

System for concentrating exhaust gas flow in a catalyst during cold starts

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Macomb, MI, United States of America

Brett Schubring