公开(公告)号：JPH0261308A

公开(公告)日：1990-03-01

申请号：JP21330588

申请日：1988-08-27

Applicant: MAZDA MOTOR

Inventor： OSAKI SHIGEZO ,  OUCHI KATSUYA ,  NISHIDA MASAMI ,  YAMAMOTO SHINYA

IPC: C21D6/00 ,  C21D9/00 ,  C22C38/00 ,  C22C38/28 ,  F01L1/18

Abstract: PURPOSE:To provide a locker arm which has excellent wear resistance and fatigue strength by a method wherein after an alloy material formed by a specified composition is cast by a matrix formed by a lost wax process to form a raw material, various kinds of treatment and processing are applied on the raw material. CONSTITUTION:A locker arm has an engaging end part 11 supported by a spherical support seat, a contact end part 12 brought into contact with the top part of a valve stem, and a plurality of through-holes 13a and 13b into which respective roller shafts are inserted. In this case, in mfr, an alloy material consisting of 0.3-0.45 carbon, 1.2-2.0wt.%, 5.0-6.0wt.% chrome, 1.0-1.5wt.% molybudenum, 0.8-1.2wt.% vanadium, up to 0.5wt.% manganese and a main remaining part consisting of iron is cast by a matrix formed by a lost wax process to produce a raw material. Annealing treatment, machine coarse processing, quenching, and finish processing are applied, in order, on the raw material to finish a locker arm.

公开(公告)号：JPS63259111A

公开(公告)日：1988-10-26

申请号：JP9394587

申请日：1987-04-16

Applicant: MAZDA MOTOR

Inventor： NISHIDA MASAMI ,  ASAUMI KOJI ,  CHIYOUSHI MASAHIRO ,  HAJIYAMA KOICHI

IPC: F01L1/18

Abstract: PURPOSE:To improve the machinability of a rocker arm by manufacture it in such that its roller installing through-portion running vertically is formed in the middle portion of the rocker arm, on a swing arm type valve system provided in the center of the rocker arm with a roller in contact with the cam of a camshaft. CONSTITUTION:A valve device 7 has a suction valve rocker arm 11 with its one end being connected to a suction valve 8 and the other end being supported in rocking motion by a pivot 10 working as a supporting point, and a similar exhaust valve rocker arm 13. In this case, the rocker arm 11 (and 13 similarly) is formed so that a roller installing through-portion 19 is allowed to run through vertically in its middle portion. Also, holes 20a, 20b are formed in the middle portions of a pair of arms 11a, 11b, and a seat 21 is formed on the top and bottom positions of respective holes 20a, 20b in such that the inner faces of respective arms 11a, 11b are cut by machine work so as to slightly protrude inwardly. Furthermore, a roller 14 is placed on respective seats 21 via a circular plate 22 so as to be axially supported by a shaft 23, and is allowed to jointly work with respective cams 15a, 16a on camshafts 15, 16.

公开(公告)号：JPS62233423A

公开(公告)日：1987-10-13

申请号：JP7507486

申请日：1986-04-01

Applicant: MAZDA MOTOR

Inventor： ASAUMI KOJI ,  SOTOZONO KAZUAKI ,  OKADA MASATOSHI ,  NISHIDA MASAMI

IPC: F01L1/02 ,  F02B67/06 ,  F02B75/22

Abstract: PURPOSE:To simplify the driving structure of a cam shaft and an oil pump, by driving an connecting together the gear on a crankshaft for taking out a rotational power, reduction gears disposed on respective banks and a drive gear coaxially disposed with the respective reduction gears by a timing belt and a chain, respectively. CONSTITUTION:When cylinder blocks at the right hand and the left hand are disposed at a prescribed angle on the upper portion of a cylinder block 2 for constructing banks 1A, 1B, a gear 10 for taking out a rotational power is disposed on a crankshaft 6. Reduction gears 11, 11 for both the banks 1A, 1B are disposed at the right and left hands above the crankshaft 6 and drive gears 13 are disposed at the extreme ends of the shaft members of the respective reduction gears 11. A timing belt member 16 trained around the gears 13 are also trained around the cam pulley at the end of a cam shaft 5 and a chain 15 is trained around a drive gear 23 provided with the pump shaft 22 of an oil pump 8 disposed below the crankshaft 6 and the above gears 10, 11.

公开(公告)号：JPS62157278A

公开(公告)日：1987-07-13

申请号：JP29838785

申请日：1985-12-28

Applicant: MAZDA MOTOR

Inventor： ASAUMI KOJI ,  OKADA MASATOSHI ,  NISHIDA MASAMI ,  SOTOZONO KAZUAKI

IPC: F02P7/03 ,  F02F1/24 ,  F02P13/00 ,  F02P15/00

Abstract: PURPOSE:To allow an ignition device to be applied even to an engine having a narrow valve caliper angle by immersing and arranging a casing containing an ignition coil in an oil space formed with a cylinder head and a head cover. CONSTITUTION:A casing main body 42 containing an ignition coil 36 is immersed and arranged in an oil chamber 24 formed with a cylinder head 8 and a head cover 20. Therefore, even if the valve caliper angle is narrow, e.g., about 36 deg., the ignition coil 36 can be arranged between cam shafts 21, 22. A gap between the casing main body 42 and a plug box 38 fitted with an ignition plug 34 is sealed with an O ring 54, and a gap between the casing main body 42 and the head cover 20 is sealed with a seal member 52 to secure the sealing performance of the oil chamber. Accordingly, the ignition coil can be arranged between the cam shafts even in a DOHC engine having a relatively narrow valve caliper angle.

公开(公告)号：JPS62131961A

公开(公告)日：1987-06-15

申请号：JP27067285

申请日：1985-12-03

Applicant: MAZDA MOTOR

Inventor： OKANO TAKAYUKI ,  NISHIDA MASAMI ,  SUGIYAMA MASAO ,  HIRATA TSUNEO

IPC: F02B31/00 ,  F02M25/06 ,  F02M25/07

Abstract: PURPOSE:To aim at improvement of the output of an engine by way of suppressing the occurrence of knocking and securing a stable combustion by placing an EGR (Exhaust gas recirculation) passage for the supply of EGR gas in such a manner that it points in the direction of a combustion chamber so as to produce the swirl of EGR gas around the outer periphery of the swirl of fresh air. CONSTITUTION:The No.1 port 6a for supplying fresh air and the No.2 port 6b for supplying EGR gas are directed in the nearly tangential direction of a cylinder. Hereby, fresh air (arrow A) from an air intake passage 11, and EGR gas (arrow B) from an EGR passage 17 produce, in a combustion chamber 5, swirls centering round the shaft center O of the cylinder. In addition, the No.2 port 6b is located outside the No.1 port 6a, and the swirl of EGR gas flows, in layers, outside the swirl of fresh air. And accordingly, since there is in existence almost only fresh air around an ignition plug 23, a stable combustion can be secured, while, since EGR gas is present along the wall surface of the cylinder, the occurrence of knocking can also be suppressed.

公开(公告)号：JP2014074412A

公开(公告)日：2014-04-24

申请号：JP2014007401

申请日：2014-01-20

Applicant: Mazda Motor Corp ,  マツダ株式会社

Inventor： GOTO TAKESHI ,  KUDO HIDETOSHI ,  NAKAHARA KOJI ,  NISHIDA MASAMI

IPC: F02B23/00 ,  F02B23/08 ,  F02F1/24

CPC classification number: Y02T10/125

Abstract: PROBLEM TO BE SOLVED: To provide a spark ignition type internal combustion engine capable of securing engine output while a geometric compression ratio is a high compression ratio.SOLUTION: In the spark ignition type internal combustion engine, the geometric compression ratio of an engine body is set to be 14 or higher, an overlap period of an intake valve 8 and an exhaust valve 9 to be opened across a top dead center is set to be 35°CA or higher in a low speed high load region, a clearance between an upper surface 3a of a piston 3 at the top dead center and a lower surface 8a of the intake valve 8 in a valve closed state and a clearance between the upper surface 3a of the piston 3 at the top dead center and a lower surface 9a of the exhaust valve 9 in the valve closed state are set to be 5 mm or larger respectively, and a stroke S of the piston 3 is set, with a bore diameter of a cylinder C as B, to a length to be S≤0.977×B+18.2 mm.

公开(公告)号：JP2014074411A

公开(公告)日：2014-04-24

申请号：JP2014007400

申请日：2014-01-20

Applicant: Mazda Motor Corp ,  マツダ株式会社

Inventor： GOTO TAKESHI ,  KUDO HIDETOSHI ,  NAKAHARA KOJI ,  NISHIDA MASAMI

IPC: F02F3/26 ,  F02B23/00 ,  F02B23/08 ,  F02B23/10 ,  F02F1/24

CPC classification number: Y02T10/125

Abstract: PROBLEM TO BE SOLVED: To provide a spark ignition type internal combustion engine capable of securing engine output while a geometric compression ratio is a high compression ratio.SOLUTION: In the spark ignition type internal combustion engine, the geometric compression ratio of an engine body is set to be 14 or higher, an overlap period of an intake valve 8 and an exhaust valve 9 to be opened across a top dead center is set to be 35°CA or higher in a low speed high load region, a clearance between an upper surface 3a of a piston 3 at the top dead center and a lower surface 8a of the intake valve 8 in a valve closed state and a clearance between the upper surface 3a of the piston 3 at the top dead center and a lower surface 9a of the exhaust valve 9 in the valve closed state are set to be 5 mm or larger respectively, and a stroke S of the piston 3 is set, with a bore diameter of a cylinder C as B, to a length to be S≤0.977×B+18.2 mm.

Abstract translation: 要解决的问题：提供一种能够在几何压缩比高压缩比下确保发动机输出的火花点火式内燃机。解决方案：在火花点火式内燃机中，发动机主体的几何压缩比为 设定为14以上的情况下，在低速高负荷区域中将打开横跨上止点的进气门8和排气阀9的重叠期间设定为35°CA以上，上部 在上止点处的活塞3的表面3a和进气门8的下表面8a处于阀关闭状态，并且在上止点处的活塞3的上表面3a和下止点9a之间的间隙 阀关闭状态的排气阀9分别设定为5mm以上，将活塞3的行程S设定为圆筒C的孔径为B，长度为S≤0.977×B +18.2毫米。

公开(公告)号：JP2014009633A

公开(公告)日：2014-01-20

申请号：JP2012146743

申请日：2012-06-29

Applicant: Mazda Motor Corp ,  マツダ株式会社

Inventor： NISHIDA MASAMI ,  MIYAMAE TORU ,  ASARI MOTOKI

IPC: F02M59/10 ,  F01L13/00

Abstract: PROBLEM TO BE SOLVED: To realize high fuel pressure and make a valve timing variable mechanism mounted to a cam shaft operable, in a fuel supply device having a plunger type fuel pump for increasing a pressure of fuel containing petrol.SOLUTION: A fuel pump has: a plunger 94 inserted in a cylinder 91; and a drive mechanism 93 for stroking the plunger. The drive mechanism has a 2-peak cam 934 rotary-driven by a crank shaft 15 to stroke the plunger. The 2-peak cam is constituted to be rotary-driven at a deceleration ratio of 1:1 relative to the crank shaft.

Abstract translation: 要解决的问题：为了实现高燃料压力，并且使得安装在凸轮轴上的气门正时可变机构可在具有用于增加含有汽油的燃料的压力的柱塞式燃料泵的燃料供应装置中操作。解决方案：燃料泵具有 插入汽缸91中的柱塞94; 以及用于抚摸柱塞的驱动机构93。 驱动机构具有由曲柄轴15旋转驱动的2峰凸轮934，以便推动柱塞。 2峰值凸轮构成为以相对于曲轴1:1的减速比旋转驱动。

公开(公告)号：JP2014009632A

公开(公告)日：2014-01-20

申请号：JP2012146742

申请日：2012-06-29

Applicant: Mazda Motor Corp ,  マツダ株式会社

Inventor： NISHIDA MASAMI ,  MIYAMAE TORU ,  ASARI MOTOKI

IPC: F02M59/10 ,  F02M59/36

Abstract: PROBLEM TO BE SOLVED: To provide both of high fuel pressure and a required fuel emission amount in a high pressure fuel pump device having a plunger type fuel pump for increasing a pressure of fuel containing petrol.SOLUTION: A fuel pump has: a cylinder 91 that is arranged to extend upward and downward, and in which fuel flows through a flow inlet 911 opened at its upper end; a suction valve 92 opening/closing the flow inlet; a solenoid coil 923 driving the suction valve; a plunger 94 inserted in the cylinder; and a driving mechanism 93 stroking the plunger. The suction valve is constituted so that the fuel flows in the cylinder through the flow inlet by flowing the fuel in a stroke direction of the plunger when the valve is opened. The solenoid coil is arranged above the suction valve. The driving mechanism is arranged at a height position nearer a crank shaft than a cam shaft of an engine, and drive-coupled with the crank shaft.

Abstract translation: 要解决的问题：在具有用于增加含有汽油的燃料的压力的柱塞式燃料泵的高压燃料泵装置中同时提供高燃料压力和所需的燃料排放量。解决方案：燃料泵具有：气缸91 其布置成向上和向下延伸，并且其中燃料流过在其上端开口的流入口911; 打开/关闭流入口的吸入阀92; 驱动吸入阀的电磁线圈923; 柱塞94插入气缸中; 以及抚摸柱塞的驱动机构93。 吸入阀构成为，当阀打开时，燃料通过流动入口通过使柱塞的行程方向流动而使燃料在气缸中流动。 螺线管线圈设置在吸入阀的上方。 驱动机构布置在比发动机的凸轮轴更靠近曲轴的高度位置处，并且与曲轴驱动耦合。

公开(公告)号：JP2014009629A

公开(公告)日：2014-01-20

申请号：JP2012146739

申请日：2012-06-29

Applicant: Mazda Motor Corp ,  マツダ株式会社

Inventor： NISHIDA MASAMI ,  GOTO KEIJI ,  KOTONE TAKAO ,  SAKAI MAKOTO ,  CHO TAKESHI ,  HORIUCHI HIROAKI

IPC: F02M47/00 ,  F02M61/18

Abstract: PROBLEM TO BE SOLVED: To provide a fuel injection valve of a direct-injection engine which unites lowering of suction power of solenoid coils 81, 82 necessary for the valve opening by reducing back pressure of a needle 83 and enlarging of arrangement intervals of a number of nozzle holes 84, in the fuel injection valve (injector 80) of a solenoid driving type.SOLUTION: A fuel injection valve includes valve bodies 841, 842 having fuel passages 800 and a plurality of nozzle holes, a needle which is stroked so as to open and close the respective nozzle holes in the fuel passages and solenoid coils 81, 82 which are arranged outside the fuel passages and stroke the needle so as to open the respective nozzle holes upon electric conduction. The maximum fuel pressure in the fuel passages is set to high fuel pressure of 40 MPa or more. The fuel passage includes a sheet part 801 which is set smaller than the diameter of a basic cylindrical part at the tip part of the needle, a throttle part 802 which continues to the sheet part and an enlargement part 803 which continues to the throttle part and has a diameter larger than the throttle part. Therein, the plurality of nozzle holes are communicated with the enlargement part.

Abstract translation: 要解决的问题：提供一种直喷式发动机的燃料喷射阀，其通过减小针83的背压并扩大数量的排列间隔，从而降低阀开启所需的电磁线圈81,82的吸入功率 在燃料喷射阀（喷射器80）中具有螺线管驱动型的喷嘴孔84.解决方案：燃料喷射阀包括具有燃料通道800和多个喷嘴孔的阀体841,842， 打开和关闭燃料通道和螺线管线圈81,82中的相应喷嘴孔，该螺线管线圈81,82布置在燃料通道的外部并行走针，以便在导电时打开相应的喷嘴孔。 燃料通路中的最大燃料压力设定为40MPa以上的高燃料压力。 燃料通路包括片部801，该片部801被设定为小于针的前端部的基本圆筒部的直径，与片部连续的节流部802，和延伸到节流部的扩大部803， 具有比节流部分大的直径。 其中，多个喷嘴孔与放大部分连通。