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公开(公告)号：US11008970B2
公开(公告)日：2021-05-18
申请号：US16922886
申请日：2020-07-07
Applicant: Mazda Motor Corporation
Inventor： Masami Nishida , Toru Miyamae , Shigeki Yamashita , Kazuhiro Takemoto , Michio Ito , Kazuhiro Nishimura , Yusuke Kawai , Tetsuya Chikada , Tatsuhiro Tokunaga
IPC: F02D41/30 , F02B5/02 , F02B9/04 , F02D1/02 , F02D41/38 , F02D41/40 , F02M59/02 , F02M59/10 , F02M59/46 , F02D1/00
Abstract: A control device for controlling an engine provided with a fuel pump including a pressurizing chamber, a plunger inserted into the pressurizing chamber and which changes a volume of the pressurizing chamber, and an on-off valve configured to open and close a suction port, is provided. When a pressurizing cycle consists of a period of pressurizing stroke in which the volume of the pressurizing chamber is reduced to allow fuel to be pressurized and a period of suction stroke in which the volume of the pressurizing chamber is increased to allow fuel to be drawn into the pressurizing chamber, a closing cycle of the on-off valve is controlled so that a ratio of the closing cycle to the pressurizing cycle becomes smaller in a second combustion mode where a partial compression-ignition combustion is performed than in a first combustion mode where SI combustion is performed.
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公开(公告)号：US10968856B2
公开(公告)日：2021-04-06
申请号：US16960613
申请日：2019-01-22
Applicant: MAZDA MOTOR CORPORATION
Inventor： Shinji Takayama , Takeatsu Ito , Michio Ito , Kenko Ujihara , Daisaku Ogawa , Daisuke Umetsu
Abstract: When an incremental amount of a steering angle exceeds a reference incremental amount, an ECU 60 executes vehicle attitude control of reducing an output torque of an engine, and, in a given operating range, drives a spark plug 16 in a manner allowing an air-fuel mixture to be self-ignited at a given timing, thereby executing SPCCI combustion. When there is a request for an additional deceleration from the vehicle attitude control (#12: YES), and the SPCCI combustion is performed (#13: YES), the ECU 60 executes fuel amount reduction control of reducing the amount of fuel to be supplied into a cylinder 2 (#14), so as to attain torque reduction for the vehicle attitude control. On the other hand, when the SPCCI combustion is not performed (#13: NO), the ECU 60 executes ignition retardation control of retarding an ignition timing of the spark plug 16 (#15).
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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
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.
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公开(公告)号：US20210017929A1
公开(公告)日：2021-01-21
申请号：US16922886
申请日：2020-07-07
Applicant: Mazda Motor Corporation
Inventor： Masami Nishida , Toru Miyamae , Shigeki Yamashita , Kazuhiro Takemoto , Michio Ito , Kazuhiro Nishimura , Yusuke Kawai , Tetsuya Chikada , Tatsuhiro Tokunaga
IPC: F02D41/30 , F02D41/40 , F02D41/38 , F02M59/02 , F02M59/46 , F02M59/10 , F02D1/02 , F02B9/04 , F02B5/02
Abstract: A control device for controlling an engine provided with a fuel pump including a pressurizing chamber, a plunger inserted into the pressurizing chamber and which changes a volume of the pressurizing chamber, and an on-off valve configured to open and close a suction port, is provided. When a pressurizing cycle consists of a period of pressurizing stroke in which the volume of the pressurizing chamber is reduced to allow fuel to be pressurized and a period of suction stroke in which the volume of the pressurizing chamber is increased to allow fuel to be drawn into the pressurizing chamber, a closing cycle of the on-off valve is controlled so that a ratio of the closing cycle to the pressurizing cycle becomes smaller in a second combustion mode where a partial compression-ignition combustion is performed than in a first combustion mode where SI combustion is performed.
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公开(公告)号：US20150211468A1
公开(公告)日：2015-07-30
申请号：US14424987
申请日：2013-08-27
Applicant: MAZDA MOTOR CORPORATION
Inventor： Keitaro Ezumi , Michio Ito
IPC: F02N11/08
CPC classification number: F02N11/0818 , F02D29/02 , F02D2041/228 , F02N11/0825 , Y02T10/48
Abstract: An automatic stop device for a vehicle engine includes: an automatic stop control unit which performs automatic engine stop when a predetermined automatic stop initiating condition is established while the vehicle is stopped, and prohibits automatic engine stop when the automatic stop initiating condition is not established; a restart control unit which performs automatic engine restart when a predetermined automatic stop cancelling condition is established after the engine is automatically stopped; and a storage unit which stores a cause of prohibiting automatic engine stop when automatic stop of the engine is prohibited while the vehicle is stopped, or a cause of performing automatic engine restart when the engine that has been automatically stopped is automatically restarted.
Abstract translation: 一种用于车辆发动机的自动停止装置，包括：自动停止控制单元，当在车辆停止时建立预定的自动停止启动条件时执行自动发动机停止，并且当自动停止启动条件未建立时禁止自动发动机停止; 在所述发动机自动停止之后建立规定的自动停止取消条件时进行自动发动机再起动的再起动控制部; 以及存储单元，其在车辆停止时禁止发动机的自动停止时禁止自动发动机停止的原因，或者当自动停止的发动机自动重新启动时进行自动发动机重起的原因。
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Patent Agency Ranking
公开(公告)号：US10815910B2
公开(公告)日：2020-10-27
申请号：US16450704
申请日：2019-06-24
Applicant: Mazda Motor Corporation
Inventor： Yuta Masuda , Masayoshi Higashio , Yugou Sunagare , Michio Ito , Kenko Ujihara , Yuto Matsushima
Abstract: A control system for a compression ignition engine is provided, which includes a sensor and a cylinder count control module which changes between all-cylinder and reduced-cylinder operations when the compression ignition combustion is performed at a given lean air-fuel ratio. The cylinder count control module executes a preparation control to change from the all-cylinder operation to the reduced-cylinder operation when the change is demanded. In the preparation control, the cylinder count control module outputs a signal to a throttle valve to execute an air amount increase processing, outputs a signal to a fuel injection valve to execute a fuel amount increase processing, and outputs a signal to an ignition plug to execute a retard processing. The cylinder count control module ends the fuel amount increase processing and the retard processing when it is determined that an air-fuel ratio is in a given air-fuel ratio state, and starts the reduced-cylinder operation.
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公开(公告)号：US20200032736A1
公开(公告)日：2020-01-30
申请号：US16457137
申请日：2019-06-28
Applicant: Mazda Motor Corporation
Inventor： Yuta Masuda , Masayoshi Higashio , Yugou Sunagare , Michio Ito , Kenko Ujihara , Yuto Matsushima
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 of the controller outputs a signal to the throttle valve so that an air amount increases more than before a demand of changing from a first mode to a second mode, and outputs to the injector a signal to increase a fuel amount according to the air amount increase so that an air-fuel ratio of mixture gas becomes at or substantially at a stoichiometric air-fuel ratio, and outputs to the ignition plug a signal to retard an ignition timing so that an engine torque increase caused by the fuel amount increase is reduced. The changing module reduces the retarding of the ignition timing when the ignition timing is determined to have reached a retard limit.
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公开(公告)号：US20200032720A1
公开(公告)日：2020-01-30
申请号：US16450704
申请日：2019-06-24
Applicant: Mazda Motor Corporation
Inventor： Yuta Masuda , Masayoshi Higashio , Yugou Sunagare , Michio Ito , Kenko Ujihara , Yuto Matsushima
Abstract: A control system for a compression ignition engine is provided, which includes a sensor and a cylinder count control module which changes between all-cylinder and reduced-cylinder operations when the compression ignition combustion is performed at a given lean air-fuel ratio. The cylinder count control module executes a preparation control to change from the all-cylinder operation to the reduced-cylinder operation when the change is demanded. In the preparation control, the cylinder count control module outputs a signal to a throttle valve to execute an air amount increase processing, outputs a signal to a fuel injection valve to execute a fuel amount increase processing, and outputs a signal to an ignition plug to execute a retard processing. The cylinder count control module ends the fuel amount increase processing and the retard processing when it is determined that an air-fuel ratio is in a given air-fuel ratio state, and starts the reduced-cylinder operation.
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公开(公告)号：US09422909B2
公开(公告)日：2016-08-23
申请号：US14424987
申请日：2013-08-27
Applicant: MAZDA MOTOR CORPORATION
Inventor： Keitaro Ezumi , Michio Ito
CPC classification number: F02N11/0818 , F02D29/02 , F02D2041/228 , F02N11/0825 , Y02T10/48
Abstract: An automatic stop device for a vehicle engine includes: an automatic stop control unit which performs automatic engine stop when a predetermined automatic stop initiating condition is established while the vehicle is stopped, and prohibits automatic engine stop when the automatic stop initiating condition is not established; a restart control unit which performs automatic engine restart when a predetermined automatic stop cancelling condition is established after the engine is automatically stopped; and a storage unit which stores a cause of prohibiting automatic engine stop when automatic stop of the engine is prohibited while the vehicle is stopped, or a cause of performing automatic engine restart when the engine that has been automatically stopped is automatically restarted.
Abstract translation: 一种用于车辆发动机的自动停止装置，包括：自动停止控制单元，当在车辆停止时建立预定的自动停止启动条件时执行自动发动机停止，并且当自动停止启动条件未建立时禁止自动发动机停止; 在所述发动机自动停止之后建立规定的自动停止取消条件时进行自动发动机再起动的再起动控制部; 以及存储单元，其在车辆停止时禁止发动机的自动停止时禁止自动发动机停止的原因，或者当自动停止的发动机自动重新启动时进行自动发动机重起的原因。
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公开(公告)号：US11008930B2
公开(公告)日：2021-05-18
申请号：US16960502
申请日：2019-01-22
Applicant: MAZDA MOTOR CORPORATION
Inventor： Shinji Takayama , Takeatsu Ito , Michio Ito , Kenko Ujihara , Daisaku Ogawa , Daisuke Umetsu
Abstract: When an incremental amount of a steering angle exceeds a reference incremental amount, an ECU 60 executes vehicle attitude control of reducing an output torque of an engine, and, in a given operating range, drives a spark plug 16 to allow an air-fuel mixture to be self-ignited at a given timing, thereby executing SPCCI combustion. When there is a request for an additional deceleration from the vehicle attitude control (#12: YES) and the SPCCI combustion is performed (#13: YES), the ECU 60 prohibits ignition retardation and performs torque reduction for the vehicle attitude control, by fuel amount reduction control of reducing the amount of fuel to be supplied into a cylinder 2 (#14). On the other hand, when the SPCCI combustion is not performed (NO in #13), the ECU 60 performs the ignition retardation to attain the torque reduction for the vehicle attitude control (#15).
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