EP0604979B1
Expired / Lapsed
EP
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Vibration damping control apparatus for vehicle
Assignee: Denso Corp
•
Filing: 1993-12-28
•
Granted: 1999-08-18
•
Expires: 2013-12-28
Abstract
No abstract record available.
Inventors
- 👤 Hiroshi Tashiro
- 👤 Hiroyuki Aota
- 👤 Takaji Murakawa
- 👤 Toyoji Yagi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 06:22
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: 37
Claim 1
Independent Claim
210 words
A vehicle powered by an internal combustion engine and
provided with a vibration damping control system, the
vehicle comprising: a rotary electric machine (13, 18) operatively
connected to the internal combustion engine (1); crank angle detecting means (6) for detecting a crank
angle of the internal combustion engine (1); engine operating condition detecting means (4, 7, 17)
for detecting engine operating 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 operating condition detected by said
engine operating condition detecting means (4,7,17), and on
the basis of a series of pre-established conditions
associated with corresponding operation modes, which in
turn determine a respective timing sequence for switching
the rotary electric machine between power generation mode
and motor mode so as 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
45 words
A vehicle powered by an internal combustion engine and
provided with 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 3
Dependent Claim
43 words
A vehicle powered by an internal combustion engine and
provided with 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 4
Dependent Claim
51 words
A vehicle powered by an internal combustion engine and
provided with 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 5
Dependent Claim
91 words
A vehicle powered by an internal combustion engine and
provided with 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 6
Dependent Claim
96 words
A vehicle powered by an internal combustion engine and
provided with 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 the 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 7
Dependent Claim
80 words
A vehicle powered by an internal combustion engine and
provided with a vibration damping control system as set
forth in claim 1, 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 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 8
Dependent Claim
98 words
A vehicle powered by an internal combustion engine and
provided with 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 the 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 9
Dependent Claim
171 words
A vehicle powered by an internal combustion engine and
provided with a vibration damping control system, the
vehicle comprising: a rotary electric machine (3, 18) operatively
connected to the 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 operating condition detected by engine
operating condition detecting means (4,7,17), and on the
basis of said primary frequency component of vehicle
vibration detected by said vibration detecting means (20),
whereupon a respective timing sequence for switching the
rotary electric machine between power generation mode and
motor mode is determined so as 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 10
Dependent Claim
98 words
A vehicle powered by an internal combustion engine and
provided with a vibration damping control system as set
forth in claim 9, wherein said rotary electric machine (3,
18) provides a torque variation, said operation 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 the vehicle body.
Claim 11
Dependent Claim
108 words
A vehicle powered by an internal combustion engine and
provided with a vibration damping control system as set
forth in claim 9, wherein said rotary electric machine (3,
18) provides a torque variation, said operation 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 the
vehicle body.
Claim 12
Dependent Claim
52 words
A vehicle powered by an internal combustion engine and
provided with 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 13
Dependent Claim
56 words
A vehicle powered by an internal combustion engine and
provided with 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 14
Dependent Claim
50 words
A vehicle powered by an internal combustion engine and
provided with 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 15
Dependent Claim
80 words
A vehicle powered by an internal combustion engine and
provided with 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 16
Dependent Claim
54 words
A vehicle powered by an internal combustion engine and
provided with 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 17
Dependent Claim
68 words
A vehicle powered by an internal combustion engine and
provided with 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 18
Dependent Claim
62 words
A vehicle powered by an internal combustion engine and
provided with 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 19
Dependent Claim
53 words
A vehicle powered by an internal combustion engine and
provided with 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 20
Dependent Claim
72 words
A vehicle powered by an internal combustion engine and
provided with 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 21
Dependent Claim
108 words
Method of damping vibration in a vehicle powered by an
internal combustion engine in a controlled manner, the
process comprising the steps of: determining a phase difference between a crank angle
and a primary frequency component of vehicle vibration
including a resultant vector (11) defined by a rotational
vibration component (10) and a vertical vibration component
(9) to provide a timing for torque variations; applying torque variations to the crank shaft so as to produce a vibration
damping vector (15) having the same frequency as the
resultant vibration vector (11) in an opposite phase
thereto for reducing the vertical vibration component (9)
and rotational vehicle vibration component (10).
Claim 22
Dependent Claim
55 words
Method of damping vibration in a vehicle powered by
an internal combustion engine in a controlled manner as set
forth in claim 21, wherein the step of determining a phase
difference between a crank angle and a primary frequency
component of vehicle vibration comprises the step of
determining a crank angle of the engine (1).
Claim 23
Dependent Claim
89 words
Method of damping vibration in a vehicle powered by
an internal combustion engine in a controlled manner as set
forth in claim 22, wherein the step of determining a phase
difference between a crank angle and a primary frequency
component of vehicle vibration further comprises: determining engine speed; determining throttle valve position; whereby the phase difference between the crank angle
and the resultant vector (11) including the rotational (10)
and vertical (9) vibration components is determined based
on the engine speed and the opening degree of the throttle
valve.
Claim 24
Dependent Claim
73 words
Method of damping vibration in a vehicle powered by
an internal combustion engine in a controlled manner as set
forth in claim 22, wherein the step of determining a phase
difference between a crank angle and a primary frequency
component of vehicle vibration further comprises: determining engine speed; whereby the phase difference between a crank angle and
a primary frequency component of vehicle vibration is
determined according a variation in the engine speed.
Claim 25
Dependent Claim
95 words
Method of damping vibration in a vehicle powered by
an internal combustion engine in a controlled manner as set
forth in claim 22, wherein the step of determining a phase
difference between a crank angle and a primary frequency
component of vehicle vibration further comprises: determining a phase angle between resultant vector
(11) of the engine (1) and the crank angle at a location
where torque variations are applied; controlling the timing of said torque variations to
provide the vibration damping vector (15) in a phase
defined in a preselected relation to the phase angle.
Claim 26
Dependent Claim
91 words
Method of damping vibration in a vehicle powered by
an internal combustion engine in a controlled manner as set
forth in claim 22, wherein the step of determining a phase
difference between a crank angle and a primary frequency
component of vehicle vibration further comprises: determining an amplitude of the resultant vector (11)
including the rotational (10) and vertical (9) vibration
components; controlling the timing of said torque variations to
provide the, vibration damping vector (15) in a phase
defined in a preselected relation to the phase difference
with the amplitude.
Claim 27
Dependent Claim
104 words
Method of damping vibration in a vehicle powered by
an internal combustion engine in a controlled manner as set
forth in claim 22, wherein the step of determining a phase
difference between a crank angle and a primary frequency
component of vehicle vibration further comprises: determining engine speed; determining a phase difference between the crank angle
and the torque variation serving to minimize the vehicle
vibration generated at a preselected portion of a vehicle
body according to engine speed; determining an amplitude of torque variation serving
to minimize the vehicle vibration generated at the
preselected portion of a vehicle body according to engine
speed.
Claim 28
Dependent Claim
107 words
Method of damping vibration in a vehicle powered by
an internal combustion engine in a controlled manner as set
forth in claim 22, wherein the step of determining a phase
difference between a crank angle and a primary frequency
component of vehicle vibration further comprises: determining engine speed; determining throttle valve position; determining the phase difference between a crank angle
and the torque variation serving to minimize the vehicle
vibration according to engine speed and the opening degree
of the throttle valve; determining an amplitude of the torque variation
serving to minimize the vehicle vibration based on engine
speed and the opening degree of the throttle valve.
Claim 29
Dependent Claim
82 words
Method of damping vibration in a vehicle powered by
an internal combustion engine in a controlled manner as set
forth in claim 22, wherein the step of determining a phase
difference between a crank angle and a primary frequency
component of vehicle vibration further comprises: detecting the resultant vector (11) including the
rotational (10) and vertical (9) vibration components; being responsive to the detected resultant vector (11)
to correct the timing determined based on the phase
difference to reduce the vehicle vibrations.
Claim 30
Dependent Claim
135 words
Method of damping vibration in a vehicle powered by
an internal combustion engine in a controlled manner as set
forth in claim 22, wherein the step of determining a phase
difference between a crank angle and a primary frequency
component of vehicle vibration further comprises: defining a first phase difference between a resultant
vector (11) including the rotational (10) and vertical (9)
vibration components in a maximum vibration area of the
vehicle body; defining a second phase difference between a resultant
vector (11) including the rotational (10) and vertical (9)
vibration components in a minimum vibration area of the
vehicle body; wherein the step of performing torque variations
comprises: performing the torque variations assuming a phase
difference relative to the crank angle which lies in a
range from the first to the second phase differences.
Claim 31
Dependent Claim
101 words
Method of damping vibration in a vehicle powered by
an internal combustion engine in a controlled manner as set
forth in claim 30, wherein in the step of performing torque
variations an amplitude of the torque variations is set to
minimize the sum of an amplitude difference between the
rotational (10) vibration component and a resultant vector
(11) including the rotational (10) and vertical (9)
vibration components in the maximum vibration area and an
amplitude difference between the rotational (10) vibration
component and a resultant vector (11) including the
rotational (10) and vertical (9) vibration components in
the minimum vibration area.
Claim 32
Dependent Claim
96 words
Method of damping vibration in a vehicle powered by
an internal combustion engine in a controlled manner as set
forth in claim 21, wherein the step of determining a phase
difference between a crank angle and a primary frequency
component of vehicle vibration further comprises: controlling the timing to provide the vibration to the
engine (1) which is in the phase defined in the preselected
relation to the phase difference; wherein the step of performing torque variations
comprises: performing the torque variations by using part of
engine torque at a given operation to produce electrical
energy.
Claim 33
Dependent Claim
136 words
Method of damping vibration in a vehicle powered by
an internal combustion engine in a controlled manner as set
forth in claim 21, wherein in the step of performing torque
variations the torque variations are performed by a rotary
electric machine (3,18) 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); wherein the step of determining a phase difference
between a crank angle and a primary frequency component of
vehicle vibration further comprises: controlling switching timing between the power
generation mode and the motor mode to have the rotary
electric machine (3,18) produce the electrical energy
required to ensure electrical energy consumed in a given
electrical load of the vehicle.
Claim 34
Dependent Claim
70 words
Method of damping vibration in a vehicle powered by
an internal combustion engine in a controlled manner as set
forth in claim 33, wherein the step of determining a phase
difference between a crank angle and a primary frequency
component of vehicle vibration further comprises: controlling 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 35
Dependent Claim
76 words
Method of damping vibration in a vehicle powered by
an internal combustion engine in a controlled manner as set
forth in claim 21, wherein the step of determining a phase
difference between a crank angle and a primary frequency
component of vehicle vibration further comprises: detecting a variation in weight of the vehicle for
correcting the phase difference between engine revolution
and frequency of the vehicle vibrations based on the
variation in weight of the vehicle.
Claim 36
Dependent Claim
76 words
Method of damping vibration in a vehicle powered by
an internal combustion engine in a controlled manner as set
forth in claim 35, wherein the step of determining a phase
difference between a crank angle and a primary frequency
component of vehicle vibration further comprises: determining the center of gravity of the vehicle for
further correcting the phase difference between the engine
revolution and the frequency of the vehicle vibrations
based on the center of gravity.
Claim 37
Dependent Claim
78 words
Method of damping vibration in a vehicle powered by
an internal combustion engine in a controlled manner as set
forth in claim 21, wherein the step of determining a phase
difference between a crank angle and a primary frequency
component of vehicle vibration further comprises: detecting position of a vehicle passenger occupying
the vehicle for correcting the phase difference between
engine revolution and the frequency Method of the vehicle
vibrations based on the position of the vehicle passenger.
References Cited (Backward Citations)
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