Cummins Inc.

Cummins Filtration Ip, Inc.

Other

Cummins Engine Company, Inc.

Cummins Emission Solutions Inc.

Cummins Electronics Company, Inc.

Ross C Berryhill

Joan M Wills

Daniel R Harshbarger

Aleksey Yezerets

Neal W Currier

Curtis Lee Carrender

Phanindra V Garimella

Gregory R White

J Steve Wills

Eric K Bradley

Dean H Dringenburg

John H Linn

Todd A Corbet

Frank Kenneth Wunderlin

Jay Verner

James Lujan

Vincent P Socci

Charles R Schenk

Jeff A Mahon

Daniel R Hashbarger

Pranati Yadav

Dieter Bender

James Peyton-Jones

A system including a channel; a particulate matter sensor disposed in fluid communication with the channel, the particulate matter sensor having a sensitivity that increases in response to exposure to particulate matter; and a controller coupled to the particulate matter sensor and configured to monitor the channel in response to the sensitivity of the particular matter sensor.

Particulate matter sensor and systems

A system includes an internal combustion engine producing an exhaust stream, a particulate filtering device that treats the exhaust stream, a particulate sensor operatively coupled to the exhaust stream at a position downstream of the particulate filtering device, and a temperature sensor operatively coupled to the exhaust stream. The system includes a controller that interprets a particulate sensor particulate stability condition, interprets a particulate sensor input value and a particulate sensor temperature, compensates the particulate sensor input value in response to the particulate sensor temperature, and filters the compensated particulate sensor input value. The controller determines a soot accumulation value in response to the filtered compensated particulate sensor input value, interprets a diagnostic enable condition, and determines a particulate filter diagnostic value in response to the active diagnostic enable condition and the soot accumulation value. The controller provides the particulate filter diagnostic value to an output device.

Particulate filter diagnostics

A system for diagnosing the quality of a reagent solution may comprise a reagent solution source for supplying the reagent solution to an emissions catalyst of an internal combustion engine. Means may be provided for determining a quality value corresponding to the quality of the reagent solution. A first filter may receive the quality value and produce a first filtered quality value, and a first comparator may compare the filtered quality value to a threshold and produce a fault value if the first filtered quality value crosses the threshold. Alternatively or additionally, a second filter may receive the quality value and produce a second filtered quality value. A second comparator may compare a difference between the first and second filtered quality values to another threshold and produce another fault value if the difference crosses that threshold.

System for diagnosing reagent solution quality

A sensor diagnostic method, such as to determine rationality of one of three temperature sensors used in an exhaust aftertreatment system, includes determining the temperature difference between the first and second sensor, determining the temperature difference between the second and third sensor, determining whether the temperature differences are within an acceptable threshold range and comparing the two temperature differences to determine which sensor is in error, if any.

Sensor rationality diagnostic

An apparatus, system, and method are disclosed for determining the distribution of particulate matter on a particulate filter. The apparatus, in one embodiment, determines a first distribution of particulate matter by comparing the pressure change across the particulate filter with a change in engine operating conditions. The apparatus may include an input module for receiving input corresponding to engine operating conditions and input from a differential pressure sensor and a feedback module to determine a first distribution of particulate matter. The apparatus may further include a feed forward module for determining a particulate distribution trend and a selection control module to combine the first distribution of particulate matter with the particulate distribution trend to determine a second distribution of particulate matter. The distribution may be defined as a uniform distribution factor in certain embodiments.

Apparatus, system, and method for determining the distribution of particulate matter on a particulate filter

A method and apparatus for communicating between a host and a motor vehicle, the motor vehicle including an on board computer system having a bus for communicating with a plurality of motor vehicle systems. The apparatus includes an electronic tag having a transceiver for transmitting data to and receiving data from the host, a memory for storing bus requests and bus response data, a decoder for decoding requests from the host, a bus interface for reading data from and writing data to the bus, a controller and a filter. The bus interface extracts responses from the bus responsive to requests from the host. The responses may be stored in the memory. The controller is responsive to write requests from the host to transfer data to the bus interface and responsive to read requests from the host to transfer data stored in memory back to the host. The filter is operable to filter responses received from the bus and includes a filter database. The filter database includes one or more screening parameters for screening responses received from the bus.

Electronic tag including RF modem for monitoring motor vehicle

A control system for controlling exhaust gas recirculation in an internal combustion engine. The output of a throttle position sensor is used as an input to two parallel filters. The first filter is a lag-lead compensated filter which functions as a differentiator, producing an output proportional to the instantaneous rate of change of the throttle position.. The second filter is a fixed-rate tracking filter which generates a tracking signal that tracks the input signal. The tracking signal, however, cannot vary by more than a maximum predetermined rate. The output of the second filter is the difference between the input signal and the tracking signal. The outputs of the two filters are summed and applied to a hysteretic comparator, which turns the EGR valve off when the sum exceeds an upper threshold and turns the EGR valve back on when the sum has decayed below a lower threshold. As a result, the first filter output is largely responsible for triggering the EGR valve to turn off, while the second filter output is largely responsible for determining how long the EGR valve remains off.

Exhaust gas recirculation control system

An air intake heating system and method for use in a diesel engine having a battery and alternator is provided for minimizing white smoke emissions without excessively depleting the engine battery at low engine speeds wherein the battery and not the alternator is the principal contributor of power to the air intake heater. The system generally comprises an electrically powered heater assembly for heating the intake air of the engine, a power regulation circuit electrically connected between the battery and the alternator of the engine and the heater assembly, a rotational speed sensor and a temperature sensor, and a CPU connected to the output of the speed and temperature sensors and the power regulation circuit for admitting a first, relatively low level of power to the heater assembly at low engine speeds where the battery is the primary source of power for the assembly, and a second, higher level of power when the engine speed is high enough so that the alternator becomes the principal contributor of power to the heater assembly.

Speed-dependent air intake system and method for internal combustion

Growing community of inventors

Nashville, IN, United States of America

Ross C Berryhill