John Lahti resumes & CV records
Resumes
John Lahti
John Lahti
John P Lahti Deceased3445 Hockley Rnch Rd, Roanoke, TX 76262
John Lahti Phones & Addresses
13858 Valley Ranch Rd, Roanoke, TX 76262 817-4910607
Sheridan, IL
12263 Howland Park Dr, Plymouth, MI 48170 734-4140232
4451 Home Town Dr, Flint, MI 48506 810-2500920
Grand Blanc, MI
Novi, MI
Detroit, MI
Education
Degree:
High school graduate or higher
Emails
Mentions for John P Lahti
Publications & IP owners
Us Patents
Method And Apparatus To Optimize Engine Warm Up
US Patent:
7487030, Feb 3, 2009
Filed:
Apr 19, 2007
Appl. No.:
11/737211
Inventors:
Anthony H. Heap - Ann Arbor MI, US
John L. Lahti - Novi MI, US
John L. Lahti - Novi MI, US
Assignee:
GM Global Technology Operations, Inc. - Detroit MI
International Classification:
G06F 19/00
F02D 41/04
F02D 41/04
US Classification:
701103, 701115
Abstract:
There is provided a method and an apparatus to minimize energy loss of an internal combustion engine during engine warm-up. This includes monitoring engine operating conditions, and estimating a future energy loss. A power loss and a rate of change in the estimated future energy loss are determined. An engine control scheme effective to minimize the power loss and the rate of change in the estimated future energy loss is executed during the engine warm-up.
Method And Apparatus To Determine Instantaneous Engine Power Loss For A Powertrain System
US Patent:
7493206, Feb 17, 2009
Filed:
Apr 19, 2007
Appl. No.:
11/737197
Inventors:
John L. Lahti - Novi MI, US
Anthony H. Heap - Ann Arbor MI, US
Anthony H. Heap - Ann Arbor MI, US
Assignee:
GM Global Technology Operations, Inc. - Detroit MI
International Classification:
G06F 19/00
F02D 41/04
F02D 41/04
US Classification:
701103, 701 54, 701115
Abstract:
There is provided a method and an article of manufacture comprising a storage medium having machine-executable code stored therein for estimating a power loss for an internal combustion engine at a point in time. The code includes code to determine engine operating conditions. A nominal power loss is determined based upon an engine operating point. A power loss correction to the nominal power loss is determined based upon barometric pressure, engine temperature, air/fuel ratio, and catalyst temperature. The power loss correction is determinable for: an engine air/fuel ratio mode, an engine cylinder activation mode, and, an engine operating temperature mode.
Method And System For Collecting Crankshaft Position Data
US Patent:
7610800, Nov 3, 2009
Filed:
Aug 29, 2007
Appl. No.:
11/847109
Inventors:
Xuan Dung T. Avallone - Milford MI, US
John L. Lahti - Novi MI, US
David S. Mathews - Howell MI, US
Leonard G. Wozniak - Ann Arbor MI, US
William R. Cawthorne - Milford MI, US
Robert S Wickman - Westland MI, US
John L. Lahti - Novi MI, US
David S. Mathews - Howell MI, US
Leonard G. Wozniak - Ann Arbor MI, US
William R. Cawthorne - Milford MI, US
Robert S Wickman - Westland MI, US
Assignee:
GM Global Technology Operations, Inc. - Detroit MI
International Classification:
G01M 15/06
US Classification:
7311426
Abstract:
A method for collecting crankshaft position data includes rotating a crankshaft of an engine within a selected angular velocity range without any fuel being applied to the engine and measuring crankshaft position data.
Method For On-Board Diagnosis Of Cold Start Emissions Reduction Control Strategy
US Patent:
7630826, Dec 8, 2009
Filed:
Feb 12, 2007
Appl. No.:
11/673870
Inventors:
Wenbo Wang - Novi MI, US
John L. Lahti - Novi MI, US
Christopher A Gillanders - Royal Oak MI, US
Robert J. Genslak - Macomb MI, US
John F. Van Gilder - Webberville MI, US
John L. Lahti - Novi MI, US
Christopher A Gillanders - Royal Oak MI, US
Robert J. Genslak - Macomb MI, US
John F. Van Gilder - Webberville MI, US
Assignee:
GM Global Technology Operations, Inc. - Detroit MI
International Classification:
G06F 19/00
G01M 15/10
G01M 15/10
US Classification:
701113, 7311475
Abstract:
A diagnostic cold start emissions control system for an internal combustion engine includes a control module having a calculated engine-out energy module, an engine-out energy residual module, and a diagnostic system evaluation module. The calculated engine-out energy module is in communication with the engine-out energy residual module and is configured to determine an operating engine-out energy flow based on an operating engine torque. The engine-out energy residual module is in communication with the diagnostic system evaluation module and is configured to determine an engine-out energy residual based on the determined engine-out energy flow and an expected engine-out energy flow. The diagnostic system evaluation module is configured to determine whether the determined engine-out energy residual meets a predetermined value indicative of proper cold start emissions control.
Cold Start Emission Reduction Strategy For Coordinated Torque Control Systems
US Patent:
7856309, Dec 21, 2010
Filed:
Sep 19, 2008
Appl. No.:
12/233886
Inventors:
Christopher A Gillanders - Royal Oak MI, US
John L. Lahti - Novi MI, US
Louis A. Avallone - Milford MI, US
Jon C. Miller - Fenton MI, US
Todd R. Shupe - Milford MI, US
Jaehak Jung - Pittsford NY, US
William R. Cawthorne - Milford MI, US
Leonard G. Wozniak - Ann Arbor MI, US
John L. Lahti - Novi MI, US
Louis A. Avallone - Milford MI, US
Jon C. Miller - Fenton MI, US
Todd R. Shupe - Milford MI, US
Jaehak Jung - Pittsford NY, US
William R. Cawthorne - Milford MI, US
Leonard G. Wozniak - Ann Arbor MI, US
International Classification:
G05D 17/02
F01N 9/00
F02D 43/00
F02D 41/02
F01N 11/00
F01N 9/00
F02D 43/00
F02D 41/02
F01N 11/00
US Classification:
701113, 701102, 60274, 477 98
Abstract:
A cold-start control system for an internal combustion engine includes a heat estimation module, a torque request module and a propulsion torque determination module. The heat estimation module determines an exhaust system temperature and estimates heat required to heat an exhaust system to a predetermined temperature. The torque request module generates a torque request based on the estimated heat. The propulsion torque determination module determines a desired engine torque based on the torque request.
Method For Operating An Engine In A Hybrid Powertrain System
US Patent:
8010247, Aug 30, 2011
Filed:
Oct 16, 2008
Appl. No.:
12/253221
Inventors:
Anthony H. Heap - Ann Arbor MI, US
John L. Lahti - Novi MI, US
Anthony James Corsetti - Royal Oak MI, US
John L. Lahti - Novi MI, US
Anthony James Corsetti - Royal Oak MI, US
Assignee:
GM Global Technology Operations LLC - Detroit MI
Daimler AG - Stuttgart
Chrysler LLC - Auburn Hills MI
Bayerische Motoren Werke Aktiengesellschaft - Munich
Daimler AG - Stuttgart
Chrysler LLC - Auburn Hills MI
Bayerische Motoren Werke Aktiengesellschaft - Munich
International Classification:
B60W 10/04
G06F 17/00
G06F 17/00
US Classification:
701 22, 180 65275, 180 65265
Abstract:
An engine and an electric machine are operative to communicate tractive power with a transmission device to control output power to an output member. The electric machine is electrically coupled to an energy storage device. A method for controlling the engine and electric machine includes monitoring an operator request for power, monitoring a state of charge of the energy storage device, determining an operating cost for each of a plurality of candidate engine operating points based on the operator request for power and the state of charge of the energy storage device; and operating the engine at the candidate engine operating point having a preferred operating cost.
Fuel Efficiency Determination For An Engine
US Patent:
8014938, Sep 6, 2011
Filed:
Dec 19, 2006
Appl. No.:
11/612704
Inventors:
Michael Livshiz - Ann Arbor MI, US
John P. Blanchard - Holly MI, US
John L. Lahti - Novi MI, US
Anthony H. Heap - Ann Arbor MI, US
John P. Blanchard - Holly MI, US
John L. Lahti - Novi MI, US
Anthony H. Heap - Ann Arbor MI, US
International Classification:
G06F 19/00
US Classification:
701123, 701103, 701110, 12340645, 7311453, 702182
Abstract:
A module that calculates power loss for an internal combustion engine includes an air intake calculation module that determines a final air per cylinder (APC) value. A fuel mass rate calculation module that determines a fuel mass rate value based on the final APC value. A power loss calculation module that determines a power loss value for the internal combustion engine based on the fuel mass rate value.
Method And Apparatus To Control Warm-Up Of An Exhaust Aftertreatment System For A Hybrid Powertrain
US Patent:
8073610, Dec 6, 2011
Filed:
Sep 19, 2008
Appl. No.:
12/233924
Inventors:
Anthony H. Heap - Ann Arbor MI, US
John L. Lahti - Novi MI, US
John L. Lahti - Novi MI, US
Assignee:
GM Global Technology Operations LLC - Detroit MI
Daimler AG - Stuttgart
Chrysler LLC - Auburn Hills MI
Bayerische Motoren Werke Aktiengesellschaft - Munich
Daimler AG - Stuttgart
Chrysler LLC - Auburn Hills MI
Bayerische Motoren Werke Aktiengesellschaft - Munich
International Classification:
F01N 9/00
F01N 3/10
F02D 28/00
B60W 10/04
B60W 10/06
G06F 19/00
F01N 3/10
F02D 28/00
B60W 10/04
B60W 10/06
G06F 19/00
US Classification:
701102, 60285, 12340623, 701 54, 477115
Abstract:
An internal combustion engine is controlled to achieve a preferred temperature of the exhaust aftertreatment system and to minimize a total engine energy loss. A transmission is controlled to achieve a torque output based upon the preferred engine operation.
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