公开(公告)号：US20160252031A1

公开(公告)日：2016-09-01

申请号：US15032899

申请日：2014-10-23

Applicant: MAZDA MOTOR CORPORATION

Inventor： Kazuhiro NAGATSU ,  Atsushi INOUE ,  Kota MATSUMOTO ,  Takashi KAMINAGA ,  Toru MIYAMOTO ,  Takashi YOUSO

IPC: F02D41/04 ,  F01N3/08 ,  F02B17/00 ,  F02B3/08 ,  F02D21/10 ,  F02D21/08

CPC classification number: F02D41/04 ,  F01N3/0842 ,  F01N2570/14 ,  F02B3/08 ,  F02B17/005 ,  F02D13/02 ,  F02D21/06 ,  F02D21/08 ,  F02D21/10 ,  F02D41/0025 ,  F02D41/0057 ,  F02D41/006 ,  F02D41/0065 ,  F02D41/02 ,  F02D41/3023 ,  F02D41/3035 ,  F02D41/401 ,  F02D2041/001 ,  F02D2041/3052 ,  F02M25/12 ,  Y02T10/128 ,  Y02T10/44 ,  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 predetermined compression ignition range. When the engine body operates in a predetermined high load range of the compression ignition range, the controller maximizes a filling amount of the cylinder using a gas state adjustment system, and lowers an EGR ratio so that the air-fuel mixture in the cylinder is lean with an excess air ratio λ higher than 1 in a lower speed range, and maximizes the filling amount of the cylinder, and increases the EGR ratio so that the air-fuel mixture in the cylinder has the excess air ratio λ of 1 or lower in a higher speed range than the lower speed range.

Abstract translation: 压缩点火式发动机的控制装置包括：控制器，被配置为当发动机主体在预定的压缩点火范围内工作时通过压缩点火燃烧来操作发动机主体。 当发动机主体在压缩点火范围的预定的高负载范围内工作时，控制器使用气体状态调节系统最大化气缸的填充量，并且降低EGR率，使得气缸中的空气 - 燃料混合物是稀的 在较低速度范围内的过量空气比λ高于1，并且使气缸的填充量最大化，并且增加EGR率，使得气缸中的空气 - 燃料混合物具有1或更低的过量空气比λ 更高的速度范围比较低的速度范围。

公开(公告)号：US20190093571A1

公开(公告)日：2019-03-28

申请号：US16084547

申请日：2017-03-29

Applicant: MAZDA MOTOR CORPORATION

Inventor： Takashi YOUSO ,  Takaaki NAGANO

IPC: F02D13/02

Abstract: Disclosed is a control device for an engine provided with a first intake valve and a second intake valve in an intake port. The control device comprises: a variable valve operating mechanism (72) configured to control a valve opening timing and a valve closing timing of an intake valve (21a); and a variable valve operating mechanism (72) configured to control a valve opening timing and a valve closing timing of an intake valve (21b), independently of the intake valve (21a). The latter variable valve mechanisms (72) is operable, in an intake stroke of the engine, to close the intake valve (21b) after the elapse of a delay time rt since the intake valve (21a) is closed. The delay time rt is a time period during which a pressure wave generated upon closing of the intake valve (21a) reaches the intake valve (21b) through the intake port (16).

公开(公告)号：US20170167360A1

公开(公告)日：2017-06-15

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

CPC classification number: F02B23/101 ,  F02B2023/085 ,  F02F1/242 ,  F02F3/285 ,  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.