METHOD FOR ESTIMATING TORQUE DEVELOPED FROM ENGINE

Title:

METHOD FOR ESTIMATING TORQUE DEVELOPED FROM ENGINE

Document Type and Number:

Japanese Patent JPH1123424

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To enhance the estimation accuracy of the developed torque based on the angular acceleration Δω of an engine. SOLUTION: Angular speed is detected in two different sections of the expansion stroke and the angular acceleration Δω is operated, based on the detection results (S2). Meanwhile, correction terms OMNEHA and OMNEHB are operated based on the rotational speed of engine Ne (S3) while correction terms OMBOHA and OMBOHB are operated, based on the boost (S4). An estimated value of torque T is then calculated (S5) according to the following formula; T=Δω×(OMNEHA×OMBOHA)+(OMNEHB+OMBOHB).

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Inventors:

SHIMIZU HIROKAZU
MACHIDA KENICHI
KAKIZAKI SHIGEAKI
GOTO KENICHI
TAMURA HIDEYUKI

Application Number:

JP18142397A

Publication Date:

January 29, 1999

Filing Date:

July 07, 1997

Export Citation:

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Assignee:

UNISIA JECS CORP
NISSAN MOTOR

International Classes:

G01L3/00; F02D45/00; G01M15/00; G01M15/04; (IPC1-7): G01M15/00; F02D45/00; G01L3/00

Attorney, Agent or Firm:

Fumio Sasashima

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