EP0338485B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Torque controlling apparatus for internal combustion engine
Assignee: Hitachi Ltd
•
Filing: 1989-04-17
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Granted: 1994-09-21
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Expires: 2009-04-17
Abstract
No abstract record available.
Inventors
- 👤 Yuzo Kadomukai
- 👤 Makoto Yamakado
- 👤 Yozo Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 16:48
CPC Classifications
F; F02; F02D; F02D43/00; G; G05; G05D; G05D17/00; G05D17/02; F02D41/00; F02D41/02; F02D41/14; F02D41/1497; F02D45/00; H; H02; H02P; H02P29/00; H02P29/0016
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
189 words
A torque controlling apparatus for an internal combustion engine, comprising - an electromechanical machinery (2, 21, 22) being mechanically connected to the engine, for absorbing torque from the internal combustion engine and/or for imparting torque to the internal combustion engine, - detecting means (3, 4, 5) for detecting an operative condition of the internal combustion engine, and - controlling means (7, 71, 72) for controlling the electromechanical machinery (2, 21, 22), characterized in further comprising - memory means (6) for storing prior to the use of the apparatus waveform characteristics of deviations of the torque generated by the internal combustion engine from a mean value of the torque at each of the respective operative conditions of the internal combustion engine , and in that - the controlling means (7, 71, 72) reads out the waveform characteristics of the torque deviation from the memory means corresponding to the detected operative condition of the internal combustion engine and controls the electromechanical machinery on the basis of the read-out waveform characteristics to absorb torque from the internal combustion engine and/or impart torque to the internal combustion engine, thereby reducing the torque deviation.
Claim 2
Dependent Claim
41 words
An apparatus according to claim 1, characterized in that the electromechanical machinery includes a motor-generator (2) and the controlling means controls the motor generator (2) on the basis of the read-out waveform characteristics to generate countertorque to cancel the torque deviation.
Claim 3
Dependent Claim
26 words
An apparatus according to claim 1, characterized in that the electromechanical machinery includes an electric load means for exclusively absorbing torque from the internal combustion engine.
Claim 4
Dependent Claim
26 words
An apparatus according to claim 1, characterized in that the electromechanical machinery includes an electric motor (22) for exclusively imparting torque to the internal combustion engine.
Claim 5
Dependent Claim
30 words
An apparatus according to claim 3, characterized in that the electric load means includes an electric generator (21) provided on a vehicle on which the internal combustion engine is mounted.
Claim 6
Dependent Claim
24 words
An apparatus according to claim 1, characterized in that the waveform characteristics of the torque deviation stored in said memory means are wave patterns.
Claim 7
Dependent Claim
34 words
An apparatus according to claim 1, characterized in that the waveform characteristics of the torque deviation stored in the memory means are a function representative of wave patterns and a group of coefficients therefor.
Claim 8
Dependent Claim
52 words
An apparatus according to claim 6, characterized in that the wave pattern is selected from the group consisting of a sine wave and a rectangular wave which have a period, a value of which is obtained by dividing one combustion cycle of the internal combustion engine by the number of cylinders thereof.
Claim 9
Dependent Claim
64 words
An apparatus according to claim 6, characterized in that the detecting means (5) includes means (3) for detecting an amount of mixture gas to flow into the internal combustion engine and means (4) for detecting mean rotating speed of the internal combustion engine, thereby determining the operative condition on the basis of the detected amount of mixture gas and the detected mean rotating speed.
Claim 10
Dependent Claim
20 words
An apparatus according to claim 1, characterized in that the electromechanical machinery is integrally mounted on the internal combustion engine.
Claim 11
Dependent Claim
61 words
An apparatus according to claim 1, characterized in that the electromechanical machinery (2) includes an electric generator (21) and an electric motor (22) that are separated from each other, and wherein the controlling means (71, 72) independently controls the electric generator and the electric motor on the basis of the read-out waveform characteristics to generate countertorque to cancel the torque deviation.
Claim 12
Dependent Claim
92 words
An apparatus according to claim 1, characterized in that the electromechanical machinery (2) includes an electric generator (21) and an electric motor (22) that are separated from each other, and wherein the controlling means (71, 72) controls the electric generator (21) to absorb large torque from the internal combustion engine when torque deviation is positive, controls the electric generator (21) to absorb small torque from the internal combustion engine when torque deviation is negative, and controls the electric motor (22) to generate constant torque to impart it to the internal combustion engine.
Claim 13
Dependent Claim
90 words
An apparatus according to claim 1, characterized in that the electromechanical machinery (2) includes an electric generator (21) and an electric motor (22) that are separated from each other, and wherein the controlling means (71, 72) controls the electric motor (22) to impart small torque to the internal combustion engine when torque deviation is positive, controls the electric motor (22) to impart a large torque to the internal combustion engine when torque deviation is negative, and controls the electric generator (21) to absorb constant torque from the internal combustion engine.
Claim 14
Dependent Claim
25 words
An apparatus according to claim 12, characterized in that the constant torque imparted to the internal combustion engine by the electric motor is zero torque.
Claim 15
Dependent Claim
25 words
An apparatus according to claim 13, characterized in that the constant torque absorbed from the internal combustion engine by the electric generator is zero torque.
Claim 16
Dependent Claim
79 words
An apparatus according to claim 1, characterized in that the electromechanical machinery (2) includes an electric generator (21) and a DC motor (22) that are separated from each other, and the controlling means (71, 72) controls the electric generator to absorb large torque from the internal combustion engine when torque deviation is positive, controls the electric generator to absorb small torque from the internal combustion engine when torque deviation is negative, and drives the DC motor with constant voltage.
References Cited (Backward Citations)
No citation records indexed.
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