EP0604979A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Vibration damping control apparatus for vehicle
Assignee: Denso Corp
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Filing: 1993-12-28
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Granted: —
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Expires: 2013-12-28
Abstract
Abstract A vibration damping control system for an automotive vehicle is provided. This system includes a torque generator (3, 18) operating with given operation timing to produce a torque vibration of a preselected frequency and an operation timing controller (4, 5). The operation timing controller initially determines a phase difference between engine revolution and frequency of vehicle vibration formed of a resultant vector defined by a first vibration component caused by movement of a crankshaft of the engine (1) and a second vibration component caused by movement of a piston of the engine (1). The controller (4, 5) then modifies the operation timing of the torque generator (3, 18) to provide the torque vibration in an opposite phase relative to the vehicle vibration based on the phase difference determined to compensate the vehicle vibration.
Inventors
- 👤 Hiroshi Tashiro
- 👤 Hiroyuki Aota
- 👤 Takaji Murakawa
- 👤 Toyoji Yagi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 23:41
CPC Classifications
B; B60; B60W; B60W20/00; B60W20/10; B60K; B60K6/00; B60K6/20; B60K6/42; B60K6/48; B60K6/485; B60W10/00; B60W10/04; B60W10/06; B60W10/08; F; F16; F16F; F16F15/00; F16F15/02; F16F15/22; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/62
Claims Analysis
Total Claims: 41
Claim 1
Independent Claim
163 words
A vibration damping control system for a vehicle comprising: a rotary electric machine (3, 18) connected to an internal combustion engine (1): crank angle detecting means (6) for detecting a crank angle of the internal combustion engine (1); engine operation condition detecting means (4, 7, 17) for detecting engine operation condition related to a phase difference between the crank angle detected by said crank angle detecting means (6) and a primary frequency component of vehicle vibration including a resultant vector defined by a rotational vibration component and a vertical vibration component; operation mode determining means (4) for determining an operation mode of said rotary electric machine (3, 18) based on the engine operation condition detected by said engine operation condition detecting means (4, 7, 17) to reduce both the rotational vibration component and the vertical vibration component: and controlling means (4, 5) for controlling said rotary electric machine (3, 18) based on the operation mode determined by said operation mode determining means (4).
Claim 2
Dependent Claim
163 words
A vibration damping control system for a vehicle comprising: a rotary electric machine (3, 18) connected to an internal combustion engine (1): crank angle detecting means (6) for detecting a crank angle of the internal combustion engine (1); engine operation condition detecting means (4, 7, 17) for detecting engine operation condition related to a phase difference between the crank angle detected by said crank angle detecting means (6) and a primary frequency component of vehicle vibration including a resultant vector defined by a rotational vibration component and a vertical vibration component; operation mode determining means (4) for determining an operation mode of said rotary electric machine (3, 18) based on the engine operation condition detected by said engine operation condition detecting means (4, 7, 17) to reduce both the rotational vibration component and the vertical vibration component: and controlling means (4, 5) for controlling said rotary electric machine (3, 18) based on the operation mode determined by said operation mode determining means (4).
Claim 3
Dependent Claim
34 words
A vibration damping control system as set forth in claim 1, wherein said engine operating condition detecting means detects an idling operating condition of the internal combustion engine (1) as the engine operating condition.
Claim 4
Dependent Claim
32 words
A vibration damping control system as set forth in claim 1, wherein said engine operating condition detecting means detects engine speed of the internal combustion engine (1) as the engine operating condition.
Claim 5
Dependent Claim
40 words
A vibration damping control system as set forth in claim 1, wherein said engine operating condition detecting means detects engine speed and an opening degree of a throttle valve of the internal combustion engine (1) as the engine operating condition.
Claim 6
Dependent Claim
80 words
A vibration damping control system as set forth in claim 1, wherein said rotary electric machine (3, 18) provide a torque variation, said operating mode determining means determining a phase difference between the torque variation provided by said rotary electric machine (3, 18) and the crank angle of the internal combustion engine (1) which is required to minimize the primary frequency component of vehicle vibration including the resultant vector formed with the rotational vibration component and the vertical vibration component.
Claim 7
Dependent Claim
85 words
A vibration damping control system as set forth in claim 1, wherein the primary frequency component includes a primary frequency component at a preselected vibration-exciting portion of a vehicle body, said rotary electric machine (3, 18) providing a torque variation, said operating mode determining means determining a phase difference between the torque variation provided by said rotary electric machine (3, 18) and the crank angle of the internal combustion engine (1) which is required to minimize the primary frequency component at the preselected vibration-exciting portion.
Claim 8
Dependent Claim
94 words
A vibration damping control system as set forth in claim 1, wherein the primary frequency component includes the resultant vector defined by the rotational vibration component and the vertical vibration component of the internal combustion engine (1), said rotary electric machine (3, 18) providing a torque variation, said operating mode determining means determining a phase difference between the torque variation provided by said rotary electric machine (3, 18) and the crank angle of the internal combustion engine (1) and an amplitude of the torque variation which are required to minimize the primary frequency component.
Claim 9
Dependent Claim
87 words
A vibration damping control system as set forth in claim 1, wherein the primary frequency component includes a primary frequency component at a preselected vibration-exciting portion of a vehicle body, said rotary electric machine (3, 18) providing a torque variation, said operating mode determining means determining a phase difference between the torque variation provided by said rotary electric machine (3, 18) and the crank angle of the internal combustion engine (1) and an amplitude of the torque variation which are required to minimize the primary frequency component.
Claim 10
Dependent Claim
122 words
A vibration damping control system for a vehicle comprising: a rotary electric machine (3, 18) connected to an internal combustion engine (1): vibration detecting means (20) for detecting a primary frequency component of vehicle vibration including a resultant vector defined by a rotational vibration component and a vertical vibration component; operation mode determining means (4) for determining an operation mode of said rotary electric machine (3, 18) based on the engine operation condition detected by said engine operation condition detecting means (4, 7, 17) to reduce both the rotational vibration component and the vertical vibration component: and controlling means (4, 5) for controlling said rotary electric machine (3, 18) based on the operation mode determined by said operation mode determining means (4).
Claim 11
Dependent Claim
122 words
A vibration damping control system for a vehicle comprising: a rotary electric machine (3, 18) connected to an internal combustion engine (1): vibration detecting means (20) for detecting a primary frequency component of vehicle vibration including a resultant vector defined by a rotational vibration component and a vertical vibration component; operation mode determining means (4) for determining an operation mode of said rotary electric machine (3, 18) based on the engine operation condition detected by said engine operation condition detecting means (4, 7, 17) to reduce both the rotational vibration component and the vertical vibration component: and controlling means (4, 5) for controlling said rotary electric machine (3, 18) based on the operation mode determined by said operation mode determining means (4).
Claim 12
Dependent Claim
87 words
A vibration damping control system as set forth in claim 9, wherein said rotary electric machine (3, 18) provides a torque variation, said operating mode determining means determining a phase difference between the torque variation provided by said rotary electric machine (3, 18) and a crank angle of the internal combustion engine (1) based on the primary frequency component detected by said vibration detecting means (20), the phase angle being determined to minimize a primary frequency component developed at a preselected vibration-exciting portion of a vehicle body.
Claim 13
Dependent Claim
97 words
A vibration damping control system as set forth in claim 9, wherein said rotary electric machine (3, 18) provides a torque variation, said operating mode determining means determining an amplitude of the torque variation provided by the rotary electric machine (3, 18) and a phase difference between the torque variation and a crank angle of the internal combustion engine (1) based on the primary frequency component detected by said vibration detecting means (20), the amplitude and the phase angle being determined to minimize a primary frequency component developed at a preselected vibration-exciting portion of a vehicle body.
Claim 14
Dependent Claim
41 words
A vibration damping control system as set forth in claim 9, wherein said rotary electric machine (3, 18) is provided with an electric generator-motor which establishes transmission of electric energy between the rotary electric machine (3, 18) and battery means (8).
Claim 15
Dependent Claim
45 words
A vibration damping control system as set forth in claim 9, wherein said rotary electric machine (3, 18) is connected to a flywheel of the internal combustion engine (1) for establishing transmission of torque between the rotary electric machine (3, 18) and the flywheel (90).
Claim 16
Dependent Claim
39 words
A vibration damping control system as set forth in claim 12, wherein said controlling means (4, 5) switches a power generation mode and a motor mode in said rotary electric machine (3, 18) to provide a vibration damping torque.
Claim 17
Dependent Claim
69 words
A vibration damping control system as set forth in claim 12, wherein said controlling means (4, 5) controls said rotary electric machine (3, 18) to produce or consume the electric energy within a range from a maximum power generation level to a maximum power consumption level to provide vibration having the same frequency as the primary frequency component for reducing the rotational vibration component and the vertical vibration component.
Claim 18
Dependent Claim
43 words
A vibration damping control system as set forth in claim 9, wherein said rotary electric machine (3, 18) is provided with an alternating current motor (18), said controlling means (4, 5) controlling the amount of electric energy produced by the alternating current motor.
Claim 19
Dependent Claim
58 words
A vibration damping control system as set forth in claim 16, wherein said controlling means (4, 5) controls said rotary electric machine (3, 18) to operate within a range from maximum power generation level and a non- power generation level for providing vibration having a frequency vibrating in synchronism with the primary frequency component of the vehicle vibration.
Claim 20
Dependent Claim
51 words
A vibration damping control system as set forth in claim 9, further comprising vehicle passenger position sensor means (70, 75, 80) for detecting position of a vehicle passenger occupying the vehicle, the operation mode of said rotary electric machine (3, 18) is corrected based on the position of the vehicle passenger.
Claim 21
Dependent Claim
42 words
A vibration damping control system as set forth in claim 9, further comprising payload sensor means (60) for detecting weight of the vehicle, the operation mode of said rotary electric machine (3, 18) is corrected based on the weight of the vehicle.
Claim 22
Dependent Claim
61 words
A vibration damping control system as set forth in claim 19, wherein the payload sensor means (60) include a plurality of payload sensors mounted on different portions of the vehicle for determining the center of gravity of the vehicle, the operation mode of said rotary electric machine (3, 18) being further corrected based on the center of gravity of the vehicle.
Claim 23
Dependent Claim
121 words
A vibration damping control system for a vehicle comprising: vibration producing means (3, 18), operating with a given operation timing, for producing a vibration of a preselected frequency; phase difference determining means (4) for determining a phase difference between engine revolution and frequency of vehicle vibrations including a first vibration component caused by movement of a rotational member of an engine (1) and a second vibration component caused by movement of a rectilinear member of the engine (1); and controlling means (4, 5) for controlling the operation timing of said vibration damping means to provide the vibration in a phase defined in a preselected relation to the phase difference determined by said phase difference determining means to compensate the vehicle vibrations.
Claim 24
Dependent Claim
121 words
A vibration damping control system for a vehicle comprising: vibration producing means (3, 18), operating with a given operation timing, for producing a vibration of a preselected frequency; phase difference determining means (4) for determining a phase difference between engine revolution and frequency of vehicle vibrations including a first vibration component caused by movement of a rotational member of an engine (1) and a second vibration component caused by movement of a rectilinear member of the engine (1); and controlling means (4, 5) for controlling the operation timing of said vibration damping means to provide the vibration in a phase defined in a preselected relation to the phase difference determined by said phase difference determining means to compensate the vehicle vibrations.
Claim 25
Dependent Claim
46 words
A vibration damping control system as set forth in claim 21, wherein said vibration producing means (3, 18) provides a torque variation having the same frequency as the vehicle vibration in an opposite phase relative to a resultant vector including the first and second vibration components.
Claim 26
Dependent Claim
52 words
A vibration damping control system as set forth in claim 22, further comprising crank angle sensor means (6) for determining a crank angle of the engine (1), said phase difference determining means (4) determining the phase difference between a crank angle and a resultant vector including the first and second vibration components.
Claim 27
Dependent Claim
76 words
A vibration damping control system as set forth in claim 23, further comprising engine speed sensor means (7) for determining engine speed and throttle valve position sensor means (17) for determining an opening degree of a throttle valve, said phase difference determining means (4) determining the phase difference between the crank angle and the resultant vector including the first and second vibration components based on the engine speed and the opening degree of the throttle valve.
Claim 28
Dependent Claim
55 words
A vibration damping control system as set forth in claim 23, further comprising engine speed sensor means (7) for determining engine speed, said phase difference determining means (4) determining the phase difference between the crank angle and the resultant vector including the first and second vibration components according to a variation in the engine speed.
Claim 29
Dependent Claim
81 words
A vibration damping control system as set forth in claim 23, wherein said phase difference determining means (4) determines a phase angle between vibration of the engine (1) and the crank angle at a location of said vibration producing means (3, 18), said controlling means (4, 5) controlling the operation timing of said vibration producing means (3, 18) to provide the vibration in a phase defined in a preselected relation to the phase angle determined by said phase difference determining means.
Claim 30
Dependent Claim
75 words
A vibration damping control system as set forth in claim 23, wherein said phase difference determining means (4) further determines an amplitude of the resultant vector including the first and second vibration components, said controlling means (4, 5) controlling the operation timing of said vibration producing means (3, 18) to provide the vibration in the phase defined in the preselected relation to the phase difference with the amplitude determined by said phase difference determining means.
Claim 31
Dependent Claim
97 words
A vibration damping control system as set forth in claim 23, wherein said phase difference determining means (4) determines a phase difference between the crank angle and the torque variation of the vibration producing means (3, 18) serving to minimize the vehicle vibration generated at a preselected portion of a vehicle body according to engine speed, said phase difference determining means (4) further determining an amplitude of the torque variation of the vibration producing means (3, 18) serving to minimize the vehicle vibration generated at the preselected portion of a vehicle body based on the engine speed.
Claim 32
Dependent Claim
120 words
A vibration damping control system as set forth in claim 23, further comprising engine speed sensor means (7) for determining engine speed and throttle valve position sensor means (17) for determining an opening degree of a throttle valve, said phase difference determining means determines a phase difference between the crank angle and the torque variation of the vibration producing means (3, 18) serving to minimize the vehicle vibration according to engine speed and the opening degree of the throttle valve, said phase difference determining means (4) further determining an amplitude of the torque variation of the vibration producing means (3, 18) serving to minimize the vehicle vibration based on the engine speed and the opening degree of the throttle valve.
Claim 33
Dependent Claim
76 words
A vibration damping control system as set forth in claim 23, further comprising vibration sensor means (20) for detecting the resultant vector including the first and second vibration components, said controlling means (4, 5) being responsive to the resultant vector detected by said vibration sensor means to correct the operation timing of said vibration producing means (3, 18) determined based on the phase difference determined by said phase difference determining means to reduce the vehicle vibrations.
Claim 34
Dependent Claim
92 words
A vibration damping control system as set forth in claim 23, wherein said vibration producing means (3, 18) provides the torque variation assuming a phase difference relative to the crank angle which lies in a range from first to second phase differences, the first phase difference being defined between a resultant vector including first and second vibration components in a maximum vibration area of the vehicle body, the second phase difference being defined between a resultant vector including first and second vibration components in a minimum vibration area of the vehicle body.
Claim 35
Dependent Claim
82 words
A vibration damping control system as set forth in claim 31, wherein an amplitude of the torque variation produced by said vibration producing means (3, 18) is set to minimize the sum of an amplitude difference between the first vibration component and a resultant vibration including the first and second vibration components in the maximum vibration area and an amplitude difference between the first vibration component and a resultant vibration including the first and second vibration components in the minimum vibration area.
Claim 36
Dependent Claim
79 words
A vibration damping control system as set forth in claim 21, wherein said vibration producing means (3, 18) is provided with an alternator (18) which uses part of engine torque at the given operation to produce electrical energy, said controlling means (4, 5) controlling the operation timing of the alternator to provide the vibration to the engine (1) which is in the phase defined in the preselected relation to the phase difference determined by said phase difference determining means.
Claim 37
Dependent Claim
104 words
A vibration damping control system as set forth in claim 22, wherein said vibration producing means (3, 18) provides the torque variation to the engine (1) by switching power generation mode and motor mode, the power generation mode being to transform part of engine torque into electrical energy, the motor mode being to provide an additional torque to the engine (1), said controlling means (4, 5) controlling switching timing between the power generation mode and the motor mode to have the vibration producing means (3, 18) produce the electrical energy required to ensure electrical energy consumed in a given electric load of the vehicle.
Claim 38
Dependent Claim
42 words
A vibration damping control system as set forth in claim 34, wherein said controlling means (4, 5) controls the switching timing between the power generation mode and the motor mode according to a capacity of a battery (8) mounted in the vehicle.
Claim 39
Dependent Claim
57 words
A vibration damping control system as set forth in claim 21, further comprising payload sensor means (60) for detecting a variation in weight of the vehicle, the phase difference between the engine revolution and the frequency of the vehicle vibrations being corrected based on the variation in weight of the vehicle detected by the payload sensor means.
Claim 40
Dependent Claim
65 words
A vibration damping control system as set forth in claim 36, wherein the payload sensor means (60) includes a plurality of payload sensors mounted on different portions of the vehicle for determining the center of gravity of the vehicle, the phase difference between the engine revolution and the frequency of the vehicle vibrations being further corrected based on the center of gravity of the vehicle.
Claim 41
Dependent Claim
55 words
A vibration damping control system as set forth in claim 21, further comprising vehicle passenger position sensor means (70, 75, 80) for detecting position of a vehicle passenger occupying the vehicle, the phase difference between the engine revolution and the frequency of the vehicle vibrations being corrected based on the position of the vehicle passenger.
References Cited (Backward Citations)
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