Inventor

KOWALKOWSKI JANEAN E

US33 patents

⚠️ This page may combine multiple inventors who share the name “KOWALKOWSKI JANEAN E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

KOWALKOWSKI JANEAN E

KOWALKOWSKI JANEAN E

Exhaust aftertreatment system with diagnostic delay

System and method for controlling a nitrogen oxide sensor

Exhaust treatment methods and systems

Method and apparatus for controlling a diagnostic module for an exhaust gas sensor

System for indicating quality of a diesel exhaust fluid (“DEF”)

Efficiency determination for a selective-catalytic-reduction catalyst

Service test for exhaust gas treatment system

Particulate filter monitoring methods and systems

Exhaust diagnostic control system and method with selective disablement of NOx reduction efficiency diagnostic

GM GLOBAL TECH OPERATIONS INC

Event-based deviation integration temperature control loop diagnostic system

Exhaust gas treatment system including an enhanced SCR diagnostic unit

Method and system for selectively enabling and disabling a diagnostic monitor of a selective-catalytic-reduction device

Method and system for initiating an engine after-run state and controlling a nitrogen oxide sensor self-diagnostic tool

Oxidation catalyst/hydrocarbon injector testing system

Regeneration system to regenerate a particulate filter based on code clear diagnostic signal

Exhaust fluid dosing control system and method

GM GLOBAL TECH OPERATIONS LLC

Exhaust fluid dosing control system and method

Exponentially weighted moving averaging filter with adjustable weighting factor

Heat generation system for determining a selective catalytic reduction device efficiency

Monitoring system for a single can oxidation catalyst/particulate filter

TYLUTKI VINCENT J

Differential pressure-based enablement of a particulate filter diagnostic

Method of monitoring a differential pressure sensor of an exhaust gas treatment system

Pressure sensor disconnection detection systems and methods

System and method for determining an exhaust system condition

ANILOVICH IGOR

Nitrogen dioxide generation diagnostic for a diesel after-treatment system

Non-methane hydrocarbon conversion efficiency diagnostic for a diesel after-treatment system

KIM CHANG H

On-board diagnostic method for NO2 formation in an oxidation catalyst

YANAKIEV OGNYAN N

Method and apparatus for monitoring a particulate filter

LIU ZHIPING STEVEN

Regeneration diagnostic methods and systems

ARDANESE RAFFAELLO

NOx sensor plausibility monitor

BEDFORD JOSHUA CLIFFORD

Apparatus and method for onboard performance monitoring of oxidation catalyst

FELDMANN SCOTT T

Sensor monitoring methods and systems

RADKE BENJAMIN

Method of detecting a thermal event in an exhaust system based on temperature gradients and exhaust system configured for same