公开(公告)号：US20180281780A1

公开(公告)日：2018-10-04

申请号：US15763696

申请日：2016-12-22

Applicant: MAZDA MOTOR CORPORATION

Inventor： Keiichi HIWATASHI ,  Daisuke UMETSU ,  Osamu SUNAHARA ,  Koichi KIMOTO ,  Yasunori TAKAHARA ,  Daisaku OGAWA ,  Chikako OHISA

IPC: B60W30/045 ,  B60W40/114 ,  B62D6/00 ,  F02D17/02

CPC classification number: B60W30/045 ,  B60W40/114 ,  B60W2540/10 ,  B60W2710/0666 ,  B60W2710/105 ,  B62D6/00 ,  B62D6/003 ,  F02D17/02

Abstract: Disclosed is a vehicle control device which is applied to a vehicle equipped with an engine (10) and an engine torque adjustment mechanism for adjusting an engine torque. The control device comprises a PCM (50) configured, upon satisfaction of a condition that the vehicle is traveling and a steering angle-related value relevant to a steering angle of a steering device is increasing, to control the engine torque adjustment mechanism to reduce the engine torque, so as to execute a vehicle attitude control for generating vehicle deceleration. The PCM (50) is configured, upon satisfaction of a vehicle attitude control-terminating condition for terminating the vehicle attitude control, to control the engine torque adjustment mechanism to restore the engine torque to an original level of torque before the execution of the vehicle attitude control. The PCM (50) is further configured to gradually ease the vehicle attitude control-terminating condition, as the number of times of combustion per unit time in the engine (10) becomes smaller.

公开(公告)号：US20180086349A1

公开(公告)日：2018-03-29

申请号：US15713330

申请日：2017-09-22

Applicant: MAZDA MOTOR CORPORATION

Inventor： Keiichi HIWATASHI ,  Daisuke UMETSU ,  Osamu SUNAHARA ,  Yasunori TAKAHARA ,  Daisaku OGAWA ,  Takahiro KAWAMURA ,  Chikako OHISA

IPC: B60W40/105 ,  B60W40/10 ,  F02P5/15

CPC classification number: B60W40/105 ,  B60W10/02 ,  B60W10/04 ,  B60W40/10 ,  B60W2510/0275 ,  B60W2510/0657 ,  B60W2520/10 ,  B60W2520/14 ,  B60W2520/16 ,  B60W2520/18 ,  B60W2540/10 ,  B60W2540/18 ,  F02P5/15 ,  F02P5/1504

Abstract: The vehicle control device is designed to control a vehicle equipped with an engine (10), and an automatic transmission (200) comprising a torque converter (202) with a lockup clutch (202f). The vehicle control device comprises a controller (50) configured to perform control of changing an engagement degree of the lockup clutch (202f) and to, when such a condition that the vehicle is traveling and a steering angle-related value as a parameter related to a steering angle of a steering apparatus of the vehicle increases is satisfied, reduce an output toque of the engine (10) to generate a deceleration of the vehicle to thereby execute a torque reduction control for controlling an attitude of the vehicle. The controller (50) is configured to reduce the output toque of the engine (10), in accordance with the engagement degree of the lockup clutch (202f) controlled by a lockup control.

公开(公告)号：US20170254281A1

公开(公告)日：2017-09-07

申请号：US15446348

申请日：2017-03-01

Applicant: MAZDA MOTOR CORPORATION

Inventor： Chikako OHISA ,  Osamu SUNAHARA ,  Daisuke UMETSU ,  Takuo HIRANO ,  Kunihiro SHISHIMA ,  Takahiro KAWAMURA ,  Yasunori TAKAHARA ,  Daisaku OGAWA ,  Takeatsu ITO

IPC: F02D41/02 ,  F02D9/02 ,  F16H63/50

CPC classification number: F02D41/023 ,  B60W2540/18 ,  F02D9/02 ,  F02D11/105 ,  F02D41/0002 ,  F02D2200/501 ,  F02D2200/602 ,  F02D2250/18 ,  F02D2250/26 ,  F16H63/502 ,  Y02T10/42

Abstract: The engine control device comprises a basic target torque-deciding part for deciding a basic target torque based on a driving state of a vehicle, a torque reduction amount-deciding part for deciding a torque reduction amount based on a steering wheel operation state, an TCM for deciding a torque-down demand amount, based on a driving state of the vehicle other than the steering wheel operation state, and a final target torque-deciding part for deciding a final target torque, based on the decided basic target torque, the decided torque reduction amount and the decided torque-down demand amount, wherein the final target torque-deciding part is operable, when there is a torque-down demand, to restrict a change in the final target torque corresponding to a change in the torque reduction amount.

公开(公告)号：US20200339107A1

公开(公告)日：2020-10-29

申请号：US16758059

申请日：2018-11-29

Applicant: MAZDA MOTOR CORPORATION

Inventor： Daisaku OGAWA ,  Osamu SUNAHARA ,  Yasunori TAKAHARA ,  Chikako OHISA ,  Yuichiro AKIYA ,  Atsushi YAMASAKI ,  Keiichi HIWATASHI ,  Daisuke UMETSU

IPC: B60W30/045 ,  F02D11/02 ,  B62D1/04 ,  B60W30/18

Abstract: A vehicle control system comprises: an engine (4); an accelerator position sensor (10) configured to detect the position of an accelerator pedal; a steering device; a PCM (14) configured to generate a deceleration in the vehicle to control the attitude of the vehicle, when a steering angle-related value as a parameter related to a steering angle of the steering device increases; and a brake unit (16) configured to generate a deceleration in the vehicle, independently of reduction of an output torque of the engine, wherein the PCM is configured to generates the deceleration by means of the reduction of the output torque of the engine when a depression of the accelerator pedal is detected by the accelerator position sensor, and to generate the deceleration by the brake unit (16) when the depression of the accelerator pedal is not detected by the accelerator position sensor.

公开(公告)号：US20190390612A1

公开(公告)日：2019-12-26

申请号：US16489384

申请日：2018-03-09

Applicant: Mazda Motor Corporation

Inventor： Daisaku OGAWA ,  Osamu SUNAHARA ,  Yasunori TAKAHARA ,  Chikako OHISA ,  Yuichiro AKIYA ,  Atsushi YAMASAKI ,  Keiichi HIWATASHI ,  Daisuke UMETSU

IPC: F02D17/02 ,  B60W10/06

Abstract: A vehicle control device includes an engine 10 capable of switching between reduced-cylinder operation and all-cylinder operation, an engine control mechanism that controls an engine torque, and a PCM 50 that executes vehicle posture control for generating vehicle deceleration by controlling the engine control mechanism to reduce the engine torque upon satisfaction of a condition that a vehicle is travelling and a steering angle-related value related to a steering angle of a steering device increases. In addition, this PCM 50 permits the execution of the vehicle posture control when an engine rotation speed is more than or equal to a first rotation speed Ne1 and permits the execution of the reduced-cylinder operation of the engine 10 when the engine rotation speed is more than or equal to a second rotation speed Ne2 that is more than the first rotation speed Ne1.

公开(公告)号：US20180274459A1

公开(公告)日：2018-09-27

申请号：US15763681

申请日：2016-12-22

Applicant: MAZDA MOTOR CORPORATION

Inventor： Keiichi HIWATASHI ,  Yasunori TAKAHARA ,  Daisaku OGAWA ,  Daisuke UMETSU ,  Osamu SUNAHARA ,  Chikako OHISA ,  Koichi KIMOTO

IPC: F02D17/02 ,  B60W30/045

CPC classification number: F02D17/02 ,  B60W30/045 ,  B60W30/18145 ,  B60W30/18172 ,  B60W40/114 ,  B60W2510/0638 ,  B60W2520/125 ,  B60W2520/14 ,  B60W2540/18 ,  B60W2710/0666 ,  B60W2710/0672 ,  B62D6/00 ,  B62D6/003 ,  F02D31/001

Abstract: Disclosed is a vehicle control device which is applied to a vehicle equipped with an engine (10) and an engine torque adjustment mechanism for adjusting an output torque (engine torque) of the engine (10). The vehicle control device comprises a PCM (50) configured, upon satisfaction of a condition that the vehicle is traveling and a steering angle-related value relevant to a steering angle of a steering device is increasing, to control the engine torque adjustment mechanism to reduce the engine torque so as to generate vehicle deceleration to control vehicle attitude. The PCM (50) is further configured to gradually ease the condition, as the number of times of combustion per unit time in the engine (10) becomes smaller.

公开(公告)号：US20170254278A1

公开(公告)日：2017-09-07

申请号：US15446420

申请日：2017-03-01

Applicant: MAZDA MOTOR CORPORATION

Inventor： Chikako OHISA ,  Osamu SUNAHARA ,  Daisuke UMETSU ,  Takuo HIRANO ,  Kunihiro SHISHIMA ,  Takahiro KAWAMURA ,  Yasunori TAKAHARA ,  Daisaku OGAWA ,  Takeatsu ITO

IPC: F02D41/00 ,  F02D11/02

CPC classification number: F02D41/0087 ,  F02D11/02 ,  F02D11/105 ,  F02D37/02 ,  F02D41/0002 ,  F02D41/021 ,  F02D2041/002 ,  F02P5/045 ,  F02P5/1504 ,  Y02T10/42

Abstract: A PCM comprises a basic target torque-deciding part for deciding a basic target torque, based on a driving state of a vehicle including an accelerator pedal operation state, a torque reduction amount-deciding part for deciding a torque reduction amount, based on a driving state of the vehicle other than the accelerator pedal operation state, a final target torque-deciding part for deciding a final target torque, based on the decided basic target torque and the decided torque reduction amount, and an engine output control part for controlling an engine to cause the engine to output the decided final target torque, wherein the engine output control part is operable to prohibit switching of an operation mode of the engine from being performed simultaneously with control of the engine according to a change in the final target torque corresponding to a change in the torque reduction amount.

公开(公告)号：US20180347477A1

公开(公告)日：2018-12-06

申请号：US15515101

申请日：2016-09-09

Applicant: MAZDA MOTOR CORPORATION

Inventor： Keiichi HIWATASHI ,  Yasunori TAKAHARA ,  Daisaku OGAWA ,  Daisuke UMETSU ,  Osamu SUNAHARA ,  Koichi KIMOTO ,  Chikako OHISA

IPC: F02D17/02 ,  F02D29/02 ,  F02D41/12 ,  F02D45/00

CPC classification number: F02D17/02 ,  F02D29/02 ,  F02D41/12 ,  F02D45/00 ,  F02P5/15

Abstract: A control device for a vehicle includes: an engine (10); an engine torque adjustment mechanism for adjusting an output torque of the engine; and a PCM (50) configured, upon satisfaction of a condition that the vehicle is traveling, and that a steering angle-related value pertaining to a steering angle of a steering system is increasing, to control the engine torque adjustment mechanism to reduce the engine torque to thereby generate deceleration of the vehicle so as to control vehicle attitude. The PCM (50) is configured to set a time period from the satisfaction of the condition through until start of reduction in the engine torque, such that it becomes longer, as the number of times of combustion per unit time in the engine becomes larger, and to control the engine torque adjustment mechanism to start to reduce the engine torque when the set time period has elapsed.

公开(公告)号：US20180345977A1

公开(公告)日：2018-12-06

申请号：US15515115

申请日：2016-09-09

Applicant: MAZDA MOTOR CORPORATION

Inventor： Keiichi HIWATASHI ,  Daisuke UMETSU ,  Osamu SUNAHARA ,  Koichi KIMOTO ,  Yasunori TAKAHARA ,  Daisaku OGAWA ,  Chikako OHISA

IPC: B60W30/18 ,  F02D41/12 ,  F02D41/00

CPC classification number: B60W30/18145 ,  B60K28/10 ,  B60W30/02 ,  B60W2510/0638 ,  B60W2540/10 ,  B60W2540/18 ,  B60W2710/0666 ,  B60W2710/0672 ,  F02D17/02 ,  F02D29/02 ,  F02D41/0087 ,  F02D41/12 ,  F02D2200/101 ,  F02D2200/60 ,  F02P5/15

Abstract: A control device for a vehicle includes: an engine (10); an engine torque adjustment mechanism; and a PCM (50) configured, upon satisfaction of a condition that the vehicle is traveling and a steering angle-related value is increasing, to control the engine torque adjustment mechanism to reduce the engine torque to thereby execute a vehicle attitude control for generating deceleration of the vehicle, and, upon satisfaction of a given terminating condition for terminating the vehicle attitude control, to restore the reduced engine output torque to an original state before the execution of the vehicle attitude control. The PCM (50) sets a time period from the satisfaction of the terminating condition through until start of restoration of the engine torque, such that it becomes longer as the number of times of combustion per unit time becomes larger, and starts to restore the engine torque when the set time period has elapsed.

公开(公告)号：US20180345975A1

公开(公告)日：2018-12-06

申请号：US15515054

申请日：2016-09-09

Applicant: MAZDA MOTOR CORPORATION

Inventor： Keiichi HIWATASHI ,  Chikako OHISA ,  Daisuke UMETSU ,  Osamu SUNAHARA ,  Koichi KIMOTO ,  Yasunori TAKAHARA ,  Daisaku OGAWA

IPC: B60W30/18 ,  F02D41/12 ,  F02D41/00

CPC classification number: B60W30/18145 ,  B60W30/02 ,  B60W30/045 ,  B60W30/18063 ,  B60W30/18172 ,  B60W2510/0638 ,  B60W2510/0657 ,  B60W2540/18 ,  B60W2710/0666 ,  F02D41/0087 ,  F02D41/021 ,  F02D41/12 ,  F02D2200/1002 ,  F02D2200/101 ,  F02D2200/50 ,  F02D2200/60 ,  F02D2250/21

Abstract: A control device for a vehicle includes: an engine (10); an engine torque adjustment mechanism; and a PCM (50) configured to execute vehicle attitude control for, upon satisfaction of a vehicle attitude control executing condition that the vehicle is traveling and a steering angle-related value is increasing, reducing the engine torque to thereby generate deceleration of the vehicle. The PCM (50) is configured, upon satisfaction of a given terminating condition for terminating the vehicle attitude control, to control the engine torque adjustment mechanism to restore the reduced engine torque to an original state before the execution of the vehicle attitude control. The PCM (50) sets a rate of change in the engine output torque being restored, such that it becomes larger as the number of times of combustion per unit time becomes smaller, and restores the engine torque according to the rate of change set in the above manner.