David N Carey

US Patent:

6443056, Sep 3, 2002

Filed:

Feb 27, 2002

Appl. No.:

10/085202

Inventors:

David D. Kiefer - Bloomington IN
Michael E. Davis - Athens GA
David R. Carey - Danielsville GA

Assignee:

Carrier Corporation - Farmington CT

International Classification:

A23B 700

US Classification:

99475, 62 78, 62329, 99467, 99476, 99517

Abstract:

Apparatus for delivering conditioned air from the mixing chamber of a mobile container into a pair of supply air plenums that extend rearwardly along the side walls of the container. A series of fan units are contained within pods located within the mixing chamber adjacent to the front end of each supply air plenum. The pods are stacked in vertical alignment from the floor of the container to about the height of the container ceiling. Each pod includes two fan units that are contained in separate compartments. Each fan unit can be removed easily from the compartment and each pod unit can similarly be removed separately from the stack to facilitate mounting and removal of the pods as well as the individual fan units.

US Patent:

6823834, Nov 30, 2004

Filed:

Apr 17, 2003

Appl. No.:

10/417829

Inventors:

Donald J. Benson - Columbus IN
Taner Tuken - Columbus IN
David M. Carey - Columbus IN
Yul J. Tarr - Columbus IN

Assignee:

Cummins, Inc. - Columbus IN

International Classification:

F02B 300

US Classification:

123299, 123381, 123446, 123480

Abstract:

A system for estimating an auxiliary-injected fuel quantity includes a fuel injector for injecting fuel into an engine, a fuel pump supplying fuel to a fuel collection unit that then supplies fuel to the fuel injector, and a control circuit that generates an auxiliary-injected fuel quantity estimation model by disabling the fuel pump prior to fuel injection, and enabling the fuel pump to resume fuel pumping following fuel injection, by the fuel injector, determines a first pressure in the fuel collection unit after stabilization of the fuel pressure therein following disablement of the fuel pump and prior to the fuel injection, determines a second pressure in the fuel collection unit after the fuel injection and prior to resuming pumping of fuel by the fuel pump, and forms the model as a function of the first and second pressures and an injector on-time for a number of different engine operating conditions.

US Patent:

7171292, Jan 30, 2007

Filed:

Mar 23, 2004

Appl. No.:

10/806716

Inventors:

Steven M. Bellinger - Columbus IN, US
David M. Carey - Lino Lakes MN, US

Assignee:

Cummins, Inc. - Columbus IN

International Classification:

G01M 17/00

US Classification:

701 29, 701 31, 701111

Abstract:

A system is disclosed for processing vehicle powertrain torsional information resulting from vibration of the vehicle powertrain. A speed sensor produces a speed signal indicative of rotational speed of one of the powertrain components, and a control computer is operable to determine a magnitude of an Nth-order torsional component of vehicle powertrain vibration as a function of the speed signal. The control computer is further operable to execute either of a diagnostic routine relating to the Nth-order torsional component and a control routine controlling operation of the vehicle powertrain away from conditions at which the magnitude of the Nth-order torsional component exceeds a threshold magnitude if the magnitude of the Nth-order torsional component exceeds the threshold magnitude for at least a first predefined duration.

US Patent:

60217588, Feb 8, 2000

Filed:

Nov 26, 1997

Appl. No.:

8/979054

Inventors:

David M. Carey - Columbus IN
Taner Tuken - Columbus IN

Assignee:

Cummins Engine Company, Inc. - Columbus IN

International Classification:

F02M 5100

US Classification:

123436

Abstract:

Manufacturing/design imperfections and component failures in the fuel system/engine can lead to non-uniform torque production among the cylinders. Non-uniform cylinder torques can be observed as small engine speed fluctuations about the average engine speed at any given operating point. Severe imbalance conditions can be heard, felt, and seen by human operators. The present invention uses the fluctuations in engine speed to detect an unbalanced engine and attempts to correct the unbalance by applying trims to the fueling commands for each individual cylinder. The present invention is based on the calculation of a 6-point Fourier Transform (FFT) of engine speed data over one complete engine cycle. This FFT is calculated continuously to provide imbalance detection. An unbalanced engine results in non-zero magnitudes of the FFT components that correspond to the 0. 5, 1. 0, and 1.

US Patent:

20220252018, Aug 11, 2022

Filed:

Aug 2, 2019

Appl. No.:

17/630466

Inventors:

- Columbus IN, US
Donald J. Benson - Columbus IN, US
David Michael Carey - Greenwood IN, US
Timothy J. Viola - Columbus IN, US

Assignee:

Cummins Inc. - Columbus IN

International Classification:

F02D 41/22
F02D 41/38

Abstract:

The present disclosure relates to a method for controlling pressure of an engine, including a controller structured to implement the method and an engine system including the controller. More specifically, the present disclosure relates to a method based on a mass balance analysis of a fuel system to determine how much mass needs to be pumped to maintain or achieve a certain pressure for the engine. In some embodiments, the method analyzes how much mass can be pumped by each pumping event based on current engine conditions. The analysis is performed over the smallest repeatable pump events and cylinder events cycle, or “subcycle,” based on the number of pump events and cylinder events for a given engine configuration.

US Patent:

20210156332, May 27, 2021

Filed:

Apr 10, 2018

Appl. No.:

17/046969

Inventors:

Tommy J. Albing - Columbus IN, US
David Michael Carey - Bend OR, US
- Columbus IN, US

International Classification:

F02D 41/38
F02D 41/24

Abstract:

A method is disclosed of controlling operation of a fuel injector in response to measuring a quantity of fuel injected by the fuel injector from a fuel accumulator to an engine cylinder during operation of a fuel pump that delivers fuel to the accumulator, comprising: determining an average pressure of the fuel accumulator during a first time period before a fuel injection event; predicting a mass of fuel delivered to the fuel accumulator during a pumping event (Q); determining an average pressure of the fuel accumulator during a second time period after the fuel injection event; estimating a leakage of fuel; computing the injected fuel quantity by adding the average pressure during the first time period to Q, and subtracting the average pressure during the second time period and the leakage; and using the computed injected fuel quantity to control operation of the fuel injector.

US Patent:

20170102363, Apr 13, 2017

Filed:

Oct 7, 2016

Appl. No.:

15/288930

Inventors:

- Columbus OH, US
David M. Carey - Greenwood IN, US

International Classification:

G01N 29/036
G01L 23/24
G01N 33/22

Abstract:

Diagnostic systems including a pressure sensor, a determiner in communication with the pressure sensor, wherein the determiner is structured to estimate a sonic speed of a fuel based on identification of a fundamental oscillation frequency are disclosed. Also disclosed are diagnostic methods comprising receiving, by a pressure interpreter, a pressure signal, determining, by a determiner in communication with the pressure interpreter, a fundamental frequency of oscillation of the pressure signal, and determining, by the determiner, a sonic speed of a fuel based on the fundamental frequency of oscillation.

US Patent:

20160010584, Jan 14, 2016

Filed:

Sep 25, 2015

Appl. No.:

14/865982

Inventors:

- Columbus IN, US
David Lee BALDWIN - Columbus IN, US
David M. CAREY - Greenwood IN, US
Donald J. BENSON - Columbus IN, US

International Classification:

F02D 41/38
F02M 63/02
G01M 15/09
F02M 65/00

Abstract:

A system and method is provided to analyze an intermediate pressure signal portion between an end of an injection event signal portion and a start of a subsequent injection event signal portion. The analysis is simplified by identifying a plurality of single cycle windows and calculating a single value, such as a mean or a median, for each of the windows. An intermediate portion single value is determined by averaging the single values for each of the windows. The intermediate portion single value may then be used to identify pumping events or leakage errors that occur during the intermediate pressure signal portion that affect further analysis of the intermediate pressure signal portion.