US5910176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for calibrating a computer based model of an attribute of a mobile machine
Assignee: Caterpillar Inc
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Filing: 1996-10-28
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Granted: 1999-06-08
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Expires: 2016-10-28
Abstract
Abstract Apparatus and method for estimating an attribute associated with a mobile machine. The machine has an engine and a powertrain. The powertrain includes a torque converter coupled to the engine. The apparatus and method sense a plurality of parameters of the machine and responsively produce a plurality of respective parameter signals and calculating an estimated value of the attribute as a function of the parameter signals using a computer based model. The apparatus and method further calculates first and second estimated values of a torque converter input torque, compares the first and second torque converter input torque estimate signals and responsively calibrates the computer based model.
Inventors
- 👤 Todd D. Creger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:36
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/48; B; B60; B60W; B60W40/00; B60W40/10; B60W50/00; B60W2050/0001; B60W2050/0019; B60W2050/0028; B60W2050/0037; B60W2510/00; B60W2510/10; B60W2510/1025; F02; F02D; F02D2200/00; F02D2200/02; F02D2200/10; F02D2200/1006; F16H59/00; F16H59/36; F16H59/46; F16H2059/465; F16H2059/467
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
160 words
A method for estimating an attribute associated with a mobile machine, the machine having an engine and a powertrain, the powertrain having a torque converter coupled to the engine, including: sensing a plurality of parameters of said machine and responsively producing a plurality of respective parameter signals; calculating an estimated value of said attribute as a function of said parameter signals using a computer based model; calculating a first estimated value of a torque converter input torque as a function of said parameter signals, and responsively producing a first torque converter input torque estimate signal; measuring a torque converter output speed and responsively producing a torque converter output speed signal; calculating a second estimated value of said torque converter input torque as a function of said torque converter output speed signal and responsively producing a second torque converter input torque estimate signal; comparing said first and second torque converter input torque estimate signals and responsively calibrating said computer based model.
Claim 2
Independent Claim
160 words
A method for estimating an attribute associated with a mobile machine, the machine having an engine and a powertrain, the powertrain having a torque converter coupled to the engine, including: sensing a plurality of parameters of said machine and responsively producing a plurality of respective parameter signals; calculating an estimated value of said attribute as a function of said parameter signals using a computer based model; calculating a first estimated value of a torque converter input torque as a function of said parameter signals, and responsively producing a first torque converter input torque estimate signal; measuring a torque converter output speed and responsively producing a torque converter output speed signal; calculating a second estimated value of said torque converter input torque as a function of said torque converter output speed signal and responsively producing a second torque converter input torque estimate signal; comparing said first and second torque converter input torque estimate signals and responsively calibrating said computer based model.
Claim 3
Dependent Claim
47 words
A method, as set forth in claim 1, wherein the step of calculating an estimated value of said attribute as a function of said parameter signals using a computer based model includes the step of a calculating an estimate of a brake power associated with the engine.
Claim 4
Dependent Claim
26 words
A method as set forth in claim 2, wherein the step of calibrating said computer based model includes the step of adjusting said brake power estimate.
Claim 5
Dependent Claim
14 words
A method, as set forth in claim 1, wherein the attribute is oil temperature.
Claim 6
Dependent Claim
15 words
A method, as set forth in claim 1, wherein the attribute is a boost pressure.
Claim 7
Dependent Claim
15 words
A method, as set forth in claim 1, wherein the attribute is a driveline torque.
Claim 8
Independent Claim
106 words
An apparatus for estimating an attribute associated with a mobile machine, the machine having an engine and a powertrain, the powertrain having a torque converter coupled to the engine, including: a plurality of mobile machine parameter sensors; a diagnostic controller for calculating an estimated value of the attribute using a computer based model as a function of parameter signals received from said plurality of mobile machine parameter sensors, said diagnostic controller programmed to calculate first and second estimated values of a torque converter input torque as a function of said parameter signals, comparing said first and second estimated values and responsively calibrating said computer based model.
Claim 9
Independent Claim
106 words
An apparatus for estimating an attribute associated with a mobile machine, the machine having an engine and a powertrain, the powertrain having a torque converter coupled to the engine, including: a plurality of mobile machine parameter sensors; a diagnostic controller for calculating an estimated value of the attribute using a computer based model as a function of parameter signals received from said plurality of mobile machine parameter sensors, said diagnostic controller programmed to calculate first and second estimated values of a torque converter input torque as a function of said parameter signals, comparing said first and second estimated values and responsively calibrating said computer based model.
References Cited (Backward Citations)
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