公开(公告)号：US20210047978A1

公开(公告)日：2021-02-18

申请号：US16963122

申请日：2019-01-16

Applicant: MAZDA MOTOR CORPORATION

Inventor： Shinji TAKAYAMA ,  Takeatsu ITO ,  Masahiro NAGOSHI ,  Yuichiro AKIYA ,  Yuto MATSUSHIMA ,  Kenko UJIHARA ,  Daisaku OGAWA ,  Daisuke UMETSU

IPC: F02D41/30 ,  F02D41/40

Abstract: A control unit performs a vehicle attitude control to reduce a torque generated by an engine when an increase in a steering angle exceeds a standard increase, and a spark ignition controlled compression ignition combustion in a predetermined operating range. In the spark ignition controlled compression ignition combustion, switching of an air-fuel ratio mode is performed between a first air-fuel ratio mode (λ>1) is formed and a second air-fuel ratio mode (in which a mixed gas of λ≤1) is formed. If the switching of the air-fuel ratio mode is requested without the vehicle attitude control, the control unit allows performing the requested switching of the air-fuel ratio mode. In contrast, if the mode switching is requested in a state where the vehicle attitude control is requested, the control unit disallows switching of the air-fuel ratio mode even when the switching of the air-fuel ratio mode is requested.

公开(公告)号：US20190389469A1

公开(公告)日：2019-12-26

申请号：US16438622

申请日：2019-06-12

Applicant: MAZDA MOTOR CORPORATION

Inventor： Daisaku OGAWA ,  Daisuke UMETSU ,  Fuminori KATO

IPC: B60W30/18 ,  B60W10/06 ,  B60W10/08 ,  B60W10/18 ,  B60W30/045 ,  B60L15/20 ,  F02D41/00 ,  F02D41/02 ,  F02D41/30 ,  F02D13/02 ,  F02D9/02 ,  F02P5/15

Abstract: A method of controlling a vehicle (1) in which rear road wheels (2) are driven by a prime mover (4, 20). This vehicle control method comprises: a basic torque setting step of setting, based on a driving state of the vehicle, a basic torque to be generated by the prime mover; a decremental torque setting step of setting a decremental torque such that the basic torque is reduced in accordance with a decrease in steering angle of a steering device (26) equipped in the vehicle; and a torque generation step of controlling the prime mover to generate a torque which is determined by reducing the basic torque based on the decremental torque.

公开(公告)号：US20190389466A1

公开(公告)日：2019-12-26

申请号：US16438607

申请日：2019-06-12

Applicant: MAZDA MOTOR CORPORATION

Inventor： Daisaku OGAWA ,  Daisuke UMETSU ,  Fuminori KATO

IPC: B60W30/18 ,  B60L15/20 ,  B60W10/18 ,  B60W10/06 ,  B60W10/08 ,  F02D41/04 ,  F02D41/26

Abstract: A method of controlling a vehicle (1) in which rear road wheels (2) are driven by a prime mover (4, 20). This vehicle control method comprises: a basic torque setting step of setting, based on a driving state of the vehicle, a basic torque to be generated by the prime mover; an incremental torque setting step of setting an incremental torque such that the basic torque is increased in accordance with an increase in steering angle of a steering device (26) equipped in the vehicle; and a torque generation step of controlling the prime mover to generate a torque which is determined by increasing the basic torque based on the incremental torque.

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：US20210270333A1

公开(公告)日：2021-09-02

申请号：US17172093

申请日：2021-02-10

Applicant: Mazda Motor Corporation

Inventor： Daisaku OGAWA ,  Daisuke UMETSU ,  Shinya MORISHITA

IPC: F16D49/18 ,  B60L3/10 ,  B60L15/20

Abstract: In the vehicle control system, a controller may perform first regenerative control that causes a motor generator to perform regeneration so as to apply a braking force to a vehicle when the accelerator is off and, when the accelerator is off and a steering is turned, perform second regenerative control that causes the motor generator to perform regeneration so as to apply a braking force to the vehicle in order to control the vehicle attitude by generating a deceleration that corresponds to a steering angle in the vehicle in addition to the first regenerative control.

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：US20200377093A1

公开(公告)日：2020-12-03

申请号：US16825777

申请日：2020-03-20

Applicant: MAZDA MOTOR CORPORATION

Inventor： Yuichiro AKIYA ,  Chikako OHISA ,  Keitaro EZUMI ,  Akira TSUDA ,  Daisaku OGAWA ,  Daisuke UMETSU

IPC: B60W30/18 ,  B60W10/06 ,  B60W10/08

Abstract: A vehicle system comprises an engine, a motor-generator and a controller. The engine has a combustion mode in which a part of an air-fuel mixture is combusted by spark ignition, and then the remaining air-fuel mixture is combusted by self-ignition. The controller sets a target additional deceleration based on a steering angle, when a steering wheel is turned, and sets an air-fuel ratio of the air-fuel mixture to either one of a first air-fuel ratio and a second air-fuel ratio which is on a lean side, based on an operating state, when the engine performs the combustion mode. The controller controls an ignition timing so as to generate the target additional deceleration in the first air-fuel ratio, and controls a regenerative electric power generation of the motor-generator so as to generate the target additional deceleration in the second air-fuel ratio.