公开(公告)号：US10794316B2

公开(公告)日：2020-10-06

申请号：US16459523

申请日：2019-07-01

Applicant: Mazda Motor Corporation

Inventor： Yuto Matsushima ,  Masayoshi Higashio ,  Yugou Sunagare ,  Shinji Takayama ,  Kenko Ujihara ,  Yuta Masuda

IPC: F02D41/30 ,  F02D9/02 ,  F02B11/02 ,  F02D41/00 ,  F02D43/00 ,  F02B1/12 ,  F02B11/00

Abstract: A control system for a compression ignition engine is provided, which includes a combustion chamber, a throttle valve, an injector, an ignition, a swirl control valve, a sensor and a controller. The controller is configured to execute a first mode module, a second mode module, and a changing module to change an engine mode from a first mode to a second mode in response to a change demand. The changing module outputs signals to the throttle valve and the injector in response to the demand so that an air-fuel ratio of mixture gas becomes a stoichiometric air-fuel ratio, and outputs a signal to the swirl control valve so that an EGR gas amount decreases more than before the demand, and when the EGR gas amount is determined to be decreased to a given amount, the changing module causes the second mode module to start the second mode.

公开(公告)号：US20200032734A1

公开(公告)日：2020-01-30

申请号：US16445097

申请日：2019-06-18

Applicant: Mazda Motor Corporation

Inventor： Yuta Masuda ,  Masayoshi Higashio ,  Yugou Sunagare ,  Michio Ito ,  Kenko Ujihara ,  Yuto Matsushima

IPC: F02D41/30 ,  F02D41/00 ,  F02P5/145

Abstract: A control system for a compression ignition engine is provided, which includes a combustion chamber, a throttle valve, an injector, an ignition plug, a sensor, and a controller. A changing module outputs a signal to the throttle valve so that an air amount increases more than before the change demand, outputs to the injector a signal to increase the fuel amount according to the increase in the air amount so that an air-fuel ratio of the mixture gas becomes a stoichiometric air-fuel ratio or a substantially stoichiometric air-fuel ratio, and performs a torque adjustment so that an increase of the engine torque caused by the increase in the fuel amount is reduced. When the air amount is determined to have reached a given amount, the changing module ends the increasing of the fuel amount and the torque adjustment, and permits that a second mode module starts the second mode.

公开(公告)号：US20200032728A1

公开(公告)日：2020-01-30

申请号：US16452421

申请日：2019-06-25

Applicant: Mazda Motor Corporation

Inventor： Yuto Matsushima ,  Masayoshi Higashio ,  Yugou Sunagare ,  Shinji Takayama ,  Kenko Ujihara ,  Yuta Masuda

IPC: F02D41/00 ,  F02D41/30 ,  F02P5/04 ,  F02P5/15 ,  F02M26/15 ,  F02M26/47

Abstract: A control system for a compression ignition engine includes a combustion chamber, a throttle valve, an injector, an ignition plug, an EGR system, a sensor device and a controller. The controller includes a first mode module, a second mode module and a changing module configured to change an engine mode from a first mode to a second mode in response to a change demand. The changing module outputs signals to the throttle valve and the injector in response to the demand so that an air-fuel ratio of mixture gas becomes a stoichiometric air-fuel ratio or a substantially stoichiometric air-fuel ratio, and outputs a signal to the EGR system so that an EGR gas amount decreases more than before the demand, and when the EGR gas amount is determined to be decreased to a given amount, the changing module permits that the second mode module starts the second mode.

公开(公告)号：US20200032698A1

公开(公告)日：2020-01-30

申请号：US16456274

申请日：2019-06-28

Applicant: Mazda Motor Corporation

Inventor： Yuto Matsushima ,  Masayoshi Higashio ,  Yugou Sunagare ,  Shinji Takayama ,  Kenko Ujihara ,  Yuta Masuda

IPC: F02B1/14 ,  F02B19/10 ,  F02B53/06 ,  F02B27/02

Abstract: A control system for a compression ignition engine configured to start compression ignition combustion by igniting mixture gas formed by injecting fuel into combustion chambers is provided, which includes combustion chambers each defined in respective cylinders so that displacements of the combustion chambers change by respective pistons reciprocating, a throttle valve, ignition plugs, injectors, a sensor having measuring parts including an atmospheric-pressure detector configured to detect an atmospheric pressure, and configured to measure parameters related to operation of the engine, and a controller. The controller executes a lean compression ignition combustion control in which compression ignition combustion is performed at a given lean air-fuel ratio higher than a stoichiometric air-fuel ratio. The controller restricts the execution of the lean compression ignition combustion control when the controller determines that the atmospheric pressure is lower than a given threshold based on a signal outputted from the atmospheric-pressure detector.

公开(公告)号：US10138824B2

公开(公告)日：2018-11-27

申请号：US15429354

申请日：2017-02-10

Applicant: MAZDA MOTOR CORPORATION

Inventor： Chikako Ohisa ,  Osamu Sunahara ,  Daisuke Umetsu ,  Taizo Ohmae ,  Yugou Sunagare ,  Yasunori Takahara ,  Daisaku Ogawa ,  Takahiro Kawamura ,  Takeatsu Ito

IPC: F02D41/00 ,  F02D9/08 ,  F02D37/02 ,  F02D41/26 ,  F02M35/10 ,  F02P5/145 ,  F02D41/02 ,  F02D11/10 ,  F02D23/00 ,  F02P5/15 ,  F02B37/12

Abstract: The turbocharged engine control device 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 intake air amount so as to realize a target air amount required for an engine to output the decided final target torque, wherein the engine output control part is operable, when an operating state of the engine falls within a supercharging region, to restrict a reduction in the intake air amount corresponding to a change in the torque reduction amount.

公开(公告)号：US10883438B2

公开(公告)日：2021-01-05

申请号：US16445097

申请日：2019-06-18

Applicant: Mazda Motor Corporation

Inventor： Yuta Masuda ,  Masayoshi Higashio ,  Yugou Sunagare ,  Michio Ito ,  Kenko Ujihara ,  Yuto Matsushima

IPC: F02D41/30 ,  F02P5/145 ,  F02B1/10 ,  F02D41/00 ,  F02D37/02 ,  F02B1/14 ,  F02B11/00

Abstract: A control system for a compression ignition engine is provided, which includes a combustion chamber, a throttle valve, an injector, an ignition plug, a sensor, and a controller. A changing module outputs a signal to the throttle valve so that an air amount increases more than before the change demand, outputs to the injector a signal to increase the fuel amount according to the increase in the air amount so that an air-fuel ratio of the mixture gas becomes a stoichiometric air-fuel ratio or a substantially stoichiometric air-fuel ratio, and performs a torque adjustment so that an increase of the engine torque caused by the increase in the fuel amount is reduced. When the air amount is determined to have reached a given amount, the changing module ends the increasing of the fuel amount and the torque adjustment, and permits that a second mode module starts the second mode.

公开(公告)号：US10125670B2

公开(公告)日：2018-11-13

申请号：US15429319

申请日：2017-02-10

Applicant: MAZDA MOTOR CORPORATION

Inventor： Chikako Ohisa ,  Osamu Sunahara ,  Daisuke Umetsu ,  Taizo Ohmae ,  Yugou Sunagare ,  Yasunori Takahara ,  Daisaku Ogawa ,  Takahiro Kawamura ,  Takeatsu Ito

IPC: F02B37/12 ,  F02B37/16 ,  F02D41/00

Abstract: The turbocharged engine control device 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 the engine so as to cause the engine to output the decided final target torque, wherein the engine output control part is operable, when an operating state of the engine falls within a supercharging region where supercharging by a compressor, to restrict control of the engine corresponding to a change in the torque reduction amount.

公开(公告)号：US10100722B2

公开(公告)日：2018-10-16

申请号：US15129583

申请日：2015-02-06

Applicant: Mazda Motor Corporation

Inventor： Takafumi Nishio ,  Masayoshi Higashio ,  Yugou Sunagare

IPC: F02B37/16 ,  F02D41/00 ,  F02D41/14 ,  F02B37/12

Abstract: A control method of a turbocharged engine includes: a bypass passage bypassing a compressor; and a bypass valve configured to open and close the bypass passage. The method includes: a compressor flow rate predicting step of predicting a flow rate of air flowing through the compressor after a predetermined time; a compressor pressure ratio detecting step of detecting a pressure ratio of the compressor; a surging determining step of determining whether or not surging occurs after the predetermined time, in reference to preliminary prepared surging determination data based on the compressor predicted flow rate and the compressor pressure ratio; and a bypass valve controlling step of opening the bypass valve when it is determined in the surging determining step that the surging occurs and closing the bypass valve when it is determined in the surging determining step that the surging does not occur.

公开(公告)号：US09957883B2

公开(公告)日：2018-05-01

申请号：US15137199

申请日：2016-04-25

Applicant: Mitsubishi Electric Corporation ,  MAZDA MOTOR CORPORATION

Inventor： Junichi Inoue ,  Takahiko Ono ,  Toshiaki Maruo ,  Takafumi Nishio ,  Yugou Sunagare

IPC: F02D23/00 ,  F02B33/44 ,  F02B37/18 ,  F02D41/00 ,  F02D41/14 ,  F02D11/10 ,  F02D41/18

CPC classification number: F02B37/183 ,  F02D11/105 ,  F02D41/0007 ,  F02D41/1445 ,  F02D41/18 ,  F02D2041/1409 ,  F02D2041/1433 ,  F02D2250/18 ,  Y02T10/144 ,  Y02T10/42

Abstract: A controller, for a supercharger-equipped internal combustion engine, that can improve the feedback response of compressor driving force is provided. In a controller, inertial force produced by an inertial moment of a supercharger is calculated, based on a real rotation speed of the supercharger; then, driving force feedback control is implemented in which a gate valve control value, which is a control value for a gate valve actuator, is changed so that an addition value obtained by adding the inertial force to the real compressor driving force approaches a target compressor driving force.

公开(公告)号：US10859015B2

公开(公告)日：2020-12-08

申请号：US16452421

申请日：2019-06-25

Applicant: Mazda Motor Corporation

Inventor： Yuto Matsushima ,  Masayoshi Higashio ,  Yugou Sunagare ,  Shinji Takayama ,  Kenko Ujihara ,  Yuta Masuda

IPC: F02D41/00 ,  F02M26/15 ,  F02M26/47 ,  F02D41/30 ,  F02P5/04 ,  F02P5/15 ,  F02B31/06

Abstract: A control system for a compression ignition engine includes a combustion chamber, a throttle valve, an injector, an ignition plug, an EGR system, a sensor device and a controller. The controller includes a first mode module, a second mode module and a changing module configured to change an engine mode from a first mode to a second mode in response to a change demand. The changing module outputs signals to the throttle valve and the injector in response to the demand so that an air-fuel ratio of mixture gas becomes a stoichiometric air-fuel ratio or a substantially stoichiometric air-fuel ratio, and outputs a signal to the EGR system so that an EGR gas amount decreases more than before the demand, and when the EGR gas amount is determined to be decreased to a given amount, the changing module permits that the second mode module starts the second mode.