公开(公告)号：US10704523B2

公开(公告)日：2020-07-07

申请号：US16414508

申请日：2019-05-16

Applicant: Mazda Motor Corporation

Inventor： Masanari Sueoka ,  Atsushi Inoue ,  Keiji Maruyama ,  Takuya Ohura ,  Tomohiro Nishida ,  Yusuke Kawai ,  Tetsuya Chikada ,  Tatsuhiro Tokunaga

IPC: F02D13/02 ,  F02D41/30 ,  F02P5/04 ,  F02D41/00 ,  F02P5/15

Abstract: A control system of a compression-ignition engine includes an intake variable mechanism and a controller. In a second operating range, the controller controls the intake variable mechanism so that, while partial compression-ignition combustion is performed under an air-fuel ratio (A/F) lean environment, an intake valve open timing takes timing at an advanced side of an exhaust TDC. In a first operating range on a lower load side, the controller controls the intake variable mechanism so that, while the partial compression-ignition combustion is performed under the A/F lean environment, under the same engine speed condition, the intake valve close timing is more retarded within a range on a retarded side of an intake BDC as the engine load decreases, and an absolute value of a change rate of the intake valve close timing to the engine load becomes larger than in the second range.

公开(公告)号：US10677185B2

公开(公告)日：2020-06-09

申请号：US16087049

申请日：2017-08-25

Applicant: Mazda Motor Corporation

Inventor： Atsushi Inoue ,  Masanari Sueoka ,  Kota Matsumoto ,  Tomonori Urushihara

IPC: F02D41/30 ,  F02D21/08 ,  F02D23/02 ,  F02B23/10 ,  F02D43/00 ,  F02D13/02 ,  F02D41/00

Abstract: A control apparatus for an engine includes an engine, an EGR system, a spark plug, a controller, and a supercharging system. While a supercharging system is performing supercharging and the EGR system is introducing burned gas into a combustion chamber, in response to a control signal from the controller, the spark plug ignites air-fuel mixture at predetermined timing so that unburned air-fuel mixture combusts by autoignition after the air-fuel mixture starts to combust by the ignition.

公开(公告)号：US20200141348A1

公开(公告)日：2020-05-07

申请号：US16087058

申请日：2016-11-25

Applicant: Mazda Motor Corporation

Inventor： Kota Matsumoto ,  Tomonori Urushihara ,  Atsushi Inoue ,  Yusuke Kawai ,  Toru Miyamoto ,  Yudai Koshiro

IPC: F02D41/30 ,  F02M61/14 ,  F02P5/04 ,  F02B3/02 ,  F02F3/26 ,  F02D41/00 ,  F02D41/40

Abstract: A control device for a compression autoignition engine includes an engine, a state quantity setting device, a spark plug, a controller, and a sensor. The spark plug receives a control signal from the controller and ignites air-fuel mixture at predetermined ignition timing such that the ignited air-fuel mixture is combusted by flame propagation and then unburned air-fuel mixture in a combustion chamber is combusted by autoignition. The controller outputs a control signal to an injector such that preceding injection and succeeding injection are performed in a compression stroke.

公开(公告)号：US20190360422A1

公开(公告)日：2019-11-28

申请号：US16411030

申请日：2019-05-13

Applicant: Mazda Motor Corporation

Inventor： Masanari Sueoka ,  Atsushi Inoue ,  Keiji Maruyama ,  Takuya Ohura ,  Tomohiro Nishida ,  Yusuke Kawai ,  Tetsuya Chikada ,  Tatsuhiro Tokunaga

IPC: F02D41/30 ,  F02D41/00 ,  F02B39/12 ,  F02B39/16 ,  F02D37/02 ,  F01L1/22 ,  F02P9/00

Abstract: A method of implementing control logic of a compression-ignition engine is provided. A control part of the engine performs a calculation according to the control logic corresponding to an engine operating state in response to a measurement of a measurement part, controls a fuel injection part, a variable valve operating mechanism, an ignition part and a supercharger so that a G/F becomes leaner than a stoichiometric air fuel ratio and a A/F becomes equal to or richer than the stoichiometric air fuel ratio, while causing the supercharger to boost, and controls the ignition part so that unburnt mixture gas combusts by self-ignition after the ignition. The method includes determining a supercharging pressure P, and determining control logic defining a close timing IVC of an intake valve. When determining the control logic, the close timing IVC (deg.aBDC) is determined so that the supercharging pressure P (kPa) satisfies the following expression: P≥8.0×10−11IVC6−1.0×10−8IVC5+3.0×10−7IVC4−4.0×10−6IVC3+0.0068IVC2−0.3209IVC+116.63.

公开(公告)号：US20190309699A1

公开(公告)日：2019-10-10

申请号：US16087536

申请日：2017-11-10

Applicant: Mazda Motor Corporation

Inventor： Atsushi Inoue ,  Masanari Sueoka ,  Kota Matsumoto ,  Tomonori Urushihara

IPC: F02D41/30 ,  F02P9/00

Abstract: A control apparatus for a compression autoignition engine includes an engine, a spark plug, a controller, and sensors. After the spark plug ignites air-fuel mixture to start combustion, unburned air-fuel mixture is combusted by autoignition. The controller changes an SI rate in accordance with an operation state of the engine. Furthermore, the controller adjusts the SI rate when determining that the SI rate needs to be adjusted.

公开(公告)号：US20190101046A1

公开(公告)日：2019-04-04

申请号：US16086305

申请日：2017-08-25

Applicant: Mazda Motor Corporation

Inventor： Atsushi Inoue ,  Masanari Sueoka ,  Kota Matsumoto ,  Tomonori Urushihara

IPC: F02B23/10 ,  F02D13/02 ,  F02D23/02 ,  F02D41/24 ,  F02D41/30

Abstract: A control apparatus for an engine includes an engine, a state quantity setting device, a spark plug, and a controller. After the spark plug ignites air-fuel mixture to start combustion, combustion of unburned air-fuel mixture is caused by autoignition. The controller outputs a control signal to the state quantity setting device such that, when a number of revolutions of the engine is high, a temperature in a combustion chamber before start of compression is higher than that when the number of revolutions of the engine is low.

公开(公告)号：US20180334989A1

公开(公告)日：2018-11-22

申请号：US15964925

申请日：2018-04-27

Applicant: Mazda Motor Corporation

Inventor： Atsushi Inoue ,  Kota Matsumoto ,  Yusuke Kawai ,  Toru Miyamoto ,  Yudai Koshiro

IPC: F02D41/40 ,  F02D41/00 ,  F02B9/04 ,  F02B31/04

CPC classification number: F02D41/405 ,  F02B9/04 ,  F02B31/04 ,  F02D41/0002 ,  F02D41/0007 ,  F02D41/0052 ,  F02D41/0057 ,  F02D41/006 ,  F02D41/0065 ,  F02D41/3041 ,  F02D41/402 ,  F02D2041/0015 ,  F02D2041/0017 ,  F02D2041/389 ,  F02D2200/0618 ,  F02D2200/101

Abstract: A control system of a compression-ignition engine is provided, which includes an engine configured to cause combustion of a mixture gas inside the combustion chamber, an injector attached to the engine and configured to inject fuel into the combustion chamber, a spark plug disposed to be oriented into the combustion chamber and configured to ignite the mixture gas inside the combustion chamber, and a controller connected to the injector and the spark plug and configured to operate the engine by outputting a control signal to the injector and the spark plug, respectively. After the spark plug ignites the mixture gas to start combustion, unburned mixture gas combusts by self-ignition. The controller outputs the control signal to the injector so that a fuel injection timing is advanced when the engine operates at a high speed than at a low speed.

公开(公告)号：US20180334949A1

公开(公告)日：2018-11-22

申请号：US15962383

申请日：2018-04-25

Applicant: Mazda Motor Corporation

Inventor： Atsushi Inoue ,  Kota Matsumoto ,  Yusuke Kawai ,  Toru Miyamoto ,  Yudai Koshiro

IPC: F02B9/02 ,  F02D41/00 ,  F02D37/02 ,  F02D41/40 ,  F02F3/26

CPC classification number: F02B9/02 ,  F02D37/02 ,  F02D41/0002 ,  F02D41/401 ,  F02D41/402 ,  F02D2041/0015 ,  F02D2041/389 ,  F02D2200/101 ,  F02F3/26

Abstract: A control system of a compression-ignition engine is provided, which includes an engine, an injector, a spark plug, and a controller connected to the injector and the spark plug, and configured to operate the engine by outputting a control signal to the injector and the spark plug. After the spark plug ignites mixture gas to start combustion, unburned mixture gas combusts by self-ignition. The controller outputs the control signal to the injector to perform a first-stage injection of fuel and then a second-stage injection in which fuel is injected to at least form the mixture gas around the spark plug. The controller also outputs the control signal to the injector to control a ratio of the injection amount of the second-stage injection with respect to the injection amount of the first-stage injection to be higher at a high engine speed than at a low engine speed.

公开(公告)号：US10012134B2

公开(公告)日：2018-07-03

申请号：US15361511

申请日：2016-11-28

Applicant: MAZDA MOTOR CORPORATION

Inventor： Mitsunori Wasada ,  Tsuyoshi Yamamoto ,  Yasushi Nakahara ,  Takashi Youso ,  Hiroaki Abe ,  Takaaki Nagano ,  Atsushi Inoue ,  Kazuhiro Nagatsu ,  Takashi Kaminaga ,  Tatsuya Fujikawa

IPC: F02B23/10 ,  H01T13/20 ,  F02F1/24 ,  F02P15/02 ,  F02F3/28 ,  F02B23/08

CPC classification number: F02B23/101 ,  F02B2023/085 ,  F02D41/30 ,  F02D2041/389 ,  F02F1/242 ,  F02F3/26 ,  F02F3/285 ,  F02P13/00 ,  F02P15/02 ,  H01T13/20 ,  Y02T10/125

Abstract: Injection of the fuel by the injector 43 creates a gas flow in the combustion chamber. The gas expands in a radial fashion from an axis of a cylinder toward a radial outside of the cylinder, and then flows from the radial outside along the cylinder head bottom face 221 toward the axis of the cylinder. The spark plug 41 has a gap positioned away from the axis of the cylinder toward the radial outside of the cylinder at a predetermined distance, and placed radially inwardly from a position opposite a rim of an opening of the cavity 242. A side electrode extends to be oriented in a direction perpendicular to the flow of the gas along the cylinder head bottom face. The gap has a center positioned near the cylinder head bottom face, and closer to an interior of a combustion chamber than to the cylinder head bottom face.

公开(公告)号：US09850828B2

公开(公告)日：2017-12-26

申请号：US15032917

申请日：2014-10-23

Applicant: MAZDA MOTOR CORPORATION

Inventor： Kazuhiro Nagatsu ,  Atsushi Inoue ,  Kota Matsumoto ,  Takashi Kaminaga ,  Toru Miyamoto ,  Takashi Youso

IPC: F02D21/06 ,  F02D41/00 ,  F02D41/30 ,  F02M25/12 ,  F02M26/01 ,  F02M26/14 ,  F02M26/33 ,  F02B29/04 ,  F02D13/02 ,  F02M26/25 ,  F02B23/10 ,  F02B1/12

CPC classification number: F02D21/06 ,  F02B1/12 ,  F02B23/101 ,  F02B29/0418 ,  F02B29/0437 ,  F02B2023/102 ,  F02D13/0207 ,  F02D13/0219 ,  F02D13/0265 ,  F02D41/0025 ,  F02D41/0057 ,  F02D41/006 ,  F02D41/0065 ,  F02D41/3035 ,  F02D2041/3052 ,  F02M25/12 ,  F02M26/01 ,  F02M26/14 ,  F02M26/25 ,  F02M26/33 ,  Y02T10/128 ,  Y02T10/146 ,  Y02T10/18 ,  Y02T10/47

Abstract: A control device for a compression ignition engine includes a controller configured to operate an engine body by compression ignition combustion when the engine body operates in a compression ignition range. When the engine body operates in a low load range with a load lower than a predetermined load in the compression ignition range, the controller sets a time of fuel injection with the fuel injection valve in a first half of a compression stroke or earlier, and allows the ozonator to introduce the ozone into the cylinder. When the engine body operates in the low load range, the controller controls an ozone concentration to be lower at a higher speed than at a low speed.