Patent US3566464A successfully refreshed from Google Patents.
Patent EP0175952B1 successfully refreshed from Google Patents.
EP0175952B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Means for suppressing engine output torque fluctuations
Assignee: Mazda Motor Corp
•
Filing: 1985-08-28
•
Granted: 1990-07-18
•
Expires: 2005-08-28
Abstract
No abstract record available.
Inventors
- 👤 Hideki Eng. Tanaka
- 👤 Takashige Eng. Tokushima
- 👤 Haruki Higashi
- 👤 Shigeki Eng. Hamada
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 13:42
CPC Classifications
B; B60; B60K; B60K6/00; B60K6/20; B60K6/22; B60K6/26; B60K6/42; B60K6/48; B60K6/485; F; F02; F02B; F02B75/00; F02B75/06; F16; F16F; F16F15/00; F16F15/10; F16F15/18; H; H02; H02P; H02P29/00; H02P29/0016; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/62; Y10; Y10S; Y10S903/00; Y10S903/902; Y10S903/903; Y10S903/904; Y10S903/906
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
217 words
In an internal combustion engine having an output shaft (1) in which cyclical output torque fluctuations including a high output torque period and a low output torque period are produced as a result of operation of the engine, means for suppressing the output torque fluctuations including electric power generating means (17) adapted to be driven by the engine to apply the output shaft (1) with a negative torque directed opposite to a direction of rotation of the output shaft (1), electric motor means (16) for applying the output shaft (1) with a positive torque which is in the direction of rotation of the output shaft (1), control means (20) to operate the generating means in the high output torque period and to operate the motor means in the low output torque period for suppressing the output torque fluctuations, engine operating condition detecting means for producing an engine condition signal representing an engine operating condition, characterized by, said control means (20) being means responsive to said engine condition signal for controlling the amounts of the negative torque and the positive torque in accordance with the engine condition signal so that, during a transient period up to the steady condition, the ratio of said negative torque to said positive torque is made different from that in the steady condition.
Claim 2
Dependent Claim
217 words
In an internal combustion engine having an output shaft (1) in which cyclical output torque fluctuations including a high output torque period and a low output torque period are produced as a result of operation of the engine, means for suppressing the output torque fluctuations including electric power generating means (17) adapted to be driven by the engine to apply the output shaft (1) with a negative torque directed opposite to a direction of rotation of the output shaft (1), electric motor means (16) for applying the output shaft (1) with a positive torque which is in the direction of rotation of the output shaft (1), control means (20) to operate the generating means in the high output torque period and to operate the motor means in the low output torque period for suppressing the output torque fluctuations, engine operating condition detecting means for producing an engine condition signal representing an engine operating condition, characterized by, said control means (20) being means responsive to said engine condition signal for controlling the amounts of the negative torque and the positive torque in accordance with the engine condition signal so that, during a transient period up to the steady condition, the ratio of said negative torque to said positive torque is made different from that in the steady condition.
Claim 3
Dependent Claim
23 words
Means in accordance with claim 1 which includes means for operating said control means under an engine speed lower than a predetermined value.
Claim 4
Dependent Claim
85 words
Means in accordance with claim 1, in which said control means includes timing control means responsive to a signal from engine output shaft phase detecting means for operating said generating means and said motor means at predetermined phases of said output shaft and for reversing operating timings of the generating means and the motor means between engine speed ranges above and below an engine speed at which torque fluctuations by combustion in the engine is substantially equal to those by inertia of engine moving parts.
Claim 5
Dependent Claim
88 words
Means in accordance with claim 1 in which said generating means includes magnet means (10) mounted on one of a rotatable member (2) and a stationary part (5) of the engine which is adjacent to the rotatable member (2) and first coil means mounted on the other, and said motor means includes magnet means (10) mounted on one of a rotatable member (2) and a stationary part of the engine (5) which is adjacent to the rotatable member (2) and second coil means (8) mounted on the other.
Claim 6
Dependent Claim
33 words
Means in accordance with claim 4 in which said rotatable member is a flywheel (2) secured to the output shaft (1) and said stationary part (5) is a casing covering the flywheel (2).
Claim 7
Dependent Claim
49 words
Means in accordance with claim 1 in which said control means includes acceleration detecting means and means for decreasing the negative torque produced by the generating means with respect to the positive torque produced by the motor means, when an engine acceleration is detected, than in a normal operation.
Claim 8
Dependent Claim
37 words
Means in accordance with claim 1 in which said control means includes acceleration detecting means and means for decreasing the negative torque produced by the generating means when an engine acceleration is detected, than in normal operation.
Claim 9
Dependent Claim
33 words
Means in accordance with claim 1 in which said control means includes deceleration detecting means and means for increasing the negative torque produced by the generating means when an engine deceleration is detected.
Claim 10
Dependent Claim
44 words
Means in accordance with claim 1 in which said control means includes deceleration detecting means and means for increasing the negative torque produced by the generating means with respect to the positive torque produced by the motor means when an engine deceleration is detected.
Claim 11
Dependent Claim
33 words
Means in accordance with claim 1 in which said control means includes means for detecting engine load and increasing the positive torque produced by said motor means under a heavy load engine operation.
Claim 12
Dependent Claim
43 words
Means in accordance with claim 1 in which said control means includes means for detecting engine load and increasing the positive torque produced by said motor means while decreasing a negative torque produced by said generating means under a heavy load engine operation.
Claim 13
Dependent Claim
30 words
Means in accordance with claim 1 in which said control means includes means for operating said motor means during engine start to use said motor means as a starter motor.
Claim 14
Dependent Claim
28 words
Means in accordance with claim 1 in which said control means includes means for operating said generating means continuously under an engine speed higher than a predetermined value.
Claim 15
Dependent Claim
78 words
Means in accordance with claim 1 in which said control means includes first timing control means for controlling the operating timing of said motor means and second timing control means for controlling the operating timing of said generating means so that the operating periods of the motor means and the generating means are changed in accordance with signals from said first and second timing control means to change the ratio of the negative torque to the positive torque.
Claim 16
Dependent Claim
38 words
Means in accordance with claim 1 in which said control means is means for changing the amounts of the negative torque and the positive torque independently to change the ratio of the negative torque to the positive torque.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.