Patent EP0874149A2 successfully refreshed from Google Patents.
EP0874149A2
Expired / Lapsed
EP
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Automotive control apparatus and method
Assignee: Hitachi Ltd
•
Filing: 1998-04-24
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Granted: —
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Expires: 2018-04-24
Abstract
Abstract An apparatus and a method for controlling an automotive vehicle are disclosed, in which a control amount for securing safety of the vehicle and the control amount for achieving a state intended for by the driver of the vehicle are switched in such a manner as to reduce the shock due to the change in the torque generated from the power train, thereby accomplishing both safety and maneuverability at the same time. A first target value is set for controlling at least selected one of the driving torque, the driving force and the acceleration/deceleration rate. A second target value is calculated in accordance with the drive mode intended for by the driver or the driving environment ahead of the vehicle. In the case where a deviation exceeding a predetermined value develops between the first target value and the second target value, the fluctuations of at least one of the driving torque, the driving force and the acceleration/deceleration rate are suppressed.
Inventors
- 👤 Toshimichi Minowa
- 👤 Tatsuya Ochi
- 👤 Satoru Kuragaki
- 👤 Mitsuo Kayano
- 👤 Tokuji Yoshikawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 04:02
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/02; F02D41/021; F02D41/0215; B; B60; B60K; B60K31/00; B60K31/0008; B60W; B60W10/00; B60W10/04; B60W10/06; B60W10/10; B60W10/11; B60W10/18; B60W30/00; B60W30/14; B60W30/16; B60W30/18; B60W30/188; B60W40/00; B60W40/02; B60W40/06; F02D41/023; F02D41/14; F02D41/1497; F02D41/1498; B60L; B60L2240/00; B60L2240/40; B60L2240/48; B60L2240/486; B60W50/00; B60W2050/0001; B60W2050/0019; B60W2050/0022; B60W2520/00; B60W2520/10; B60W2520/105; B60W2540/00; B60W2540/10; B60W2540/12; B60W2710/00; B60W2710/06; B60W2710/0666; B60W2710/10; B60W2710/105; B60W2720/00; B60W2720/10; B60W2720/106; F02D2200/00; F02D2200/02; F02D2200/10; F02D2200/1015; F02D2200/70; F02D2200/701; F02D2200/702; F02D2250/00; F02D2250/18; F02D2250/21; F02D41/04; F02D41/12; F16; F16H; F16H59/00; F16H59/48; F16H61/00; F16H61/21; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/72
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
152 words
An automotive control apparatus for setting at
least selected one of the driving torque, the driving
force and the acceleration/deceleration rate on the
output shaft side of the transmission as a target value
based on at least the accelerator pedal stroke (α) and
controlling at least the engine torque in accordance
with said target value (Tet), comprising: a unit (1) for determining a first target value
(Ttar 1 ) as said target value before change; a unit (10) for determining a second target
value (Ttar 2 ) calculated in accordance with selected one
of drive modes intended for by a driver and a driving
environment ahead of the vehicle of said driver; and a control unit (2-5) for suppressing fluctuations
of at least selected one of the driving torque,
driving force and the acceleration/deceleration rate of
said vehicle when a deviation between said first and
second target values exceeds a predetermined value.
Claim 2
Dependent Claim
156 words
An automotive control apparatus for setting at
least selected one of the driving torque, the driving
force and the acceleration/deceleration rate on the
output shaft side of the transmission as a target value
based on at least the accelerator pedal stroke (α) and
controlling at least the engine torque in accordance
with said target value, comprising: at least one of means (α) for setting the
drive mode intended for by the driver and means (V s , V t )
for recognizing the driving environment ahead of the
vehicle of said driver; means (2) for changing said target value in
accordance with the signal produced from at least
selected one of said two means; and means (2) for suppressing the fluctuations of
said driving torque in the case where the deviation
between the first target value before change and the
second target value calculated by said signal exceeds a
predetermined value while changing said target value.
Claim 3
Dependent Claim
62 words
An automotive control apparatus according to
Claim 2, wherein said target value change means (2)
changes said first target value at a predetermined rate
for a predetermined period as an initial target value,
and when the deviation between said first target value
and said second target value decreases to a predetermined
level, changes said first target value to said
second target value.
Claim 4
Dependent Claim
90 words
An automotive control apparatus according to Claim
2, wherein said first target value is at least
selected one of the driving torque, the driving force
and the acceleration/deceleration rate calculated based
on the amount of manipulation of the driver, and wherein said second target value is at least
selected one of the driving torque, the driving force
and the acceleration/deceleration rate calculated in
accordance with the signal produced from selected one of
said mode setting means and said environment recognition
means, and said second target value has an upper limit.
Claim 5
Dependent Claim
42 words
An automotive control apparatus according to
Claim 2, wherein the signal produced from selected one
of said drive mode setting means and said environment
recognition means represents at least the distance from
and the speed relative with a vehicle running immediately
ahead.
Claim 6
Dependent Claim
179 words
An automotive control apparatus for setting a
target value of the driving torque on the output shaft
side of the transmission based on at least the accelerator
pedal stroke and the actual vehicle deceleration
rate and controlling the transmission ratio in accordance
with said target value, comprising: means (30) for controlling the engine brake
applied as an inverse driving force from the wheels to
the engine of the vehicle; means (3) for controlling the brake force of
the wheels in accordance with said target value or in
such a manner as to follow said target value; and transmission ratio change means (5) for
controlling at least the engine torque and the transmission
ratio in accordance with said target value,
and in the case where said target value represents a
deceleration request, controlling said engine torque
to the vicinity of a minimum value thereof, said
transmission ratio change means further inhibiting the
engine brake control by said engine brake control means
and changing said transmission ratio in accordance with
said target value as long as said brake force is
controlled.
Claim 7
Dependent Claim
109 words
An automotive control apparatus for setting a
target value of the driving torque on the output shaft
side of the transmission based on at least the accelerator
pedal stroke and the actual vehicle deceleration
rate and controlling at least the engine torque and the
transmission ratio based on said target value,
comprising: means (32) for judging whether said target
value has changed from a deceleration request to an
acceleration request, and means (33) for limiting the margin of change
from the current transmission ratio for a predetermined
period in the case where said acceleration/deceleration
rate change judging means judges that a deceleration
request has changed to an acceleration request.
Claim 8
Dependent Claim
97 words
An automotive control apparatus for setting a
target value of the driving torque on the output shaft
side of the transmission based on at least the accelerator
pedal stroke and the actual vehicle deceleration
rate and controlling at least the engine torque and the
transmission ratio based on said target value,
comprising: means (5) for calculating a target value of
the rotational speed on the input shaft side of the
transmission in accordance with said target value, and means (35) for setting a limit on the target
rotational speed on the input shaft side of said
transmission.
Claim 9
Dependent Claim
79 words
An automotive control apparatus for setting a
target value of the driving torque on the output shaft
side of the transmission based on at least the accelerator
pedal stroke and the actual vehicle deceleration
rate and controlling at least the engine torque and the
transmission ratio in accordance with said target value,
comprising: means (5) for calculating a target
transmission ratio in accordance with said target value,
and means (35) for setting a limit on the target
transmission ratio.
Claim 10
Dependent Claim
128 words
An automotive control method for setting at
least selected one of the driving torque, the driving
force and the acceleration/deceleration rate on the
output shaft side of the transmission as a target value
based on at least the accelerator pedal stroke and
controlling at least the engine torque in accordance
with said target value, wherein the fluctuations of at least selected
one of said driving torque, said driving force and said
acceleration/deceleration rate are suppressed in the
case where a deviation exceeding a predetermined value
develops between said target value constituting a first
target value before change and a second target value
calculated in accordance with selected one of the drive
mode intended for by the driver of a vehicle and the
driving environment ahead of the vehicle.
Claim 11
Dependent Claim
121 words
An automotive control method for setting at
least selected one of the driving torque, the driving
force and the acceleration/deceleration rate on the
output shaft side of the transmission as a target value
based on at least the accelerator pedal stroke and
controlling at least the engine torque in accordance
with said target value, wherein the fluctuations of said driving
torque are suppressed in the case where said target
value is changed and a predetermined value is exceeded
by the deviation between a first target value before
change and a second target value calculated from the
signal associated with selected one of the drive mode
intended for by the driver of a vehicle and the driving
environment ahead of said vehicle.
Claim 12
Dependent Claim
156 words
An automotive control method for setting a
target value of the driving torque on the output shaft
side of the transmission based on at least the accelerator
pedal stroke and the actual vehicle deceleration
rate and controlling the transmission ratio in accordance
with said target value, comprising the steps of: controlling the engine brake applied as an
inverse driving force to the engine from the wheels of
the vehicle; controlling the brake force of the wheels in
accordance with said target value or in such a manner as
to follow said target value; controlling at least the engine torque and the
transmission ratio in accordance with said target value; controlling said engine torque to the vicinity
of a minimum value thereof in the case where said target
value represents a deceleration request, inhibiting the engine brake control as long as
said brake force is controlled, and changing said transmission ratio in accordance
with said target value.
Claim 13
Dependent Claim
189 words
An automotive control apparatus for setting at
least selected one of the driving torque, the driving
force and the acceleration/deceleration rate on the
output shaft side of the transmission as a target value
based on at least the accelerator pedal stroke and
controlling at least the engine torque in accordance
with said target value, comprising: means (47) for calculating the driving torque
from the vehicle speed, the engine speed and the turbine
speed of the transmission; means (45) for calculating the actual deceleration
rate of said vehicle based on the change in the
vehicle speed; means (48) for calculating the driving load of
said vehicle from the vehicle speed, the deceleration
rate calculated by said deceleration calculation means
and the driving torque calculated by said driving torque
calculation means; means (46) for calculating a target deceleration
rate based on at least the deceleration rate
calculated by said deceleration rate calculation means
and said accelerator pedal stroke; and means (1) for calculating said target value in
accordance with the driving load calculated by said
driving load calculation means and the target
deceleration rate calculated by said target deceleration
calculation means.
Claim 14
Dependent Claim
27 words
An automotive control apparatus according to
Claim 13, wherein said driving load calculation means
includes weight rewrite means for rewriting the
magnitude of the driving load calculated.
Claim 15
Dependent Claim
148 words
An automotive control method for setting at
least selected one of the driving torque, the driving
force and the acceleration/deceleration rate on the
output shaft side of the transmission as a target value
based on at least the accelerator pedal stroke and
controlling at least the engine torque in accordance
with said target value, comprising the steps of: calculating the driving torque from the
vehicle speed, the engine speed of the vehicle and the
rotational speed of the turbine of said transmission; calculating the actual deceleration of said
vehicle based on the change in vehicle speed; calculating the driving load of said vehicle
from the deceleration rate calculated, said vehicle
speed and said driving torque; calculating a target deceleration rate based
on at least said deceleration rate and said accelerator
pedal stroke; and calculating said target value in accordance
with said driving load and said target deceleration
rate.
References Cited (Backward Citations)
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