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公开(公告)号：JPH0610693A
公开(公告)日：1994-01-18
申请号：JP17046692
申请日：1992-06-29
Applicant: MAZDA MOTOR
Inventor： TOKUNAGA SHUICHI , SUDO YASUHIRO , DOI NOBUO
Abstract: PURPOSE:To improve durability of a winding member and reduce noises by reducing tensile strength fluctuation of a tensioned part of the winding member wound between a timing pulley and a cam pulley for suppressing fluctuation of angle speed of a cam shaft, and preventing generation of secondary mode vibrations of the winding member. CONSTITUTION:A rotary member D such as an eccentric pulley provided with teeth to be engaged with teeth of a winding member C is engaged with the winding member C from inside its circle, at a position distanced from a cam pulley B or a timing pulley A by a one-fourth length of the length La of a tensioned part Ca in the winding member C provided with teeth, which member C is wound between the timing pulley A and the cam pulley B in a form of circle. The tensioned part Ca of the winding member C is periodically brought under push-press in synchronization with the rotation of a crank shaft and in accordance with a loosened timing of the tensioned part Ca.
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公开(公告)号：JPH03281967A
公开(公告)日：1991-12-12
申请号：JP8620390
申请日：1990-03-30
Applicant: MAZDA MOTOR
Inventor： TAKENO SEIGO , ABE KOJI , FURUSHIMA TAKESHI , TOUFU YASUO , OTSUKI TAKESHI , MURATA MASAYUKI , SUDO YASUHIRO
Abstract: PURPOSE:To reduce vibration noise with no reduction in output which is needless by controlling combustion conditions based on vibration control conditions which are set for cylinders at the both ends of an engine respectively on the basis of resonance frequencies and vibration characteristics at the respective end sections of a crank shaft. CONSTITUTION:In a 4 cylinder engine, vibration control conditions are set in advance for a first cylinder 2a at the front end side of the engine and a fourth cylinder 2d at the rear end side of the engine based on resonance frequencies and engine vibration characteristics at the respective end sections of a crank shaft 4, and the vibration control conditions are stored in a control unit 11. And the combustion conditions of the first and the fourth cylinder 2a and 2d are controlled based on the aforesaid vibration control conditions by the control unit 11, for example, by an ignition timing control. As vibration control conditions, a vibration control area which has to be controlled for the restraint of vibration, is set up based on resonance frequencies and engine vibration characteristics, and controlled variables in the vibration control area (the quantity of retard at ignition timing) are set up in response to engine loading and the like.
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公开(公告)号：JPH06193538A
公开(公告)日：1994-07-12
申请号：JP34722292
申请日：1992-12-25
Applicant: MAZDA MOTOR
Inventor： OTA TAKESHI , SHIGENAGA MAKOTO , ISHIDA KIMIO , SUDO YASUHIRO
Abstract: PURPOSE:To effectively suppress the generation of vibration and noise of a V-engine while preventing the reduction of an engine output as far as possible. CONSTITUTION:A combustion pressure control means (ECU) is provided for individually controlling the ignition timings of cylinders C1-C12 arranged in rows on both sides. The combustion pressure control means causes delay of the ignition timings of the cylinders C1 and C11 of the cylinders V1-C1, the cylinder C1 and C12 being cylinders situated upper stream of a crank rotation direction and positioned at a frontmost end and a reamost end, of the cylinders C1-C12.
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公开(公告)号：JPH05209650A
公开(公告)日：1993-08-20
申请号：JP1659192
申请日：1992-01-31
Applicant: MAZDA MOTOR
Inventor： OTOSHI TERUO , SUDO YASUHIRO , MORISHIMA TORU , HOSOMOTO TSUYOSHI , OTA TAKESHI , MURATA MASAYUKI
IPC: F16F15/12 , F16F15/121 , F16F15/126 , F16F15/26 , F16H55/36
Abstract: PURPOSE:To reduce noises in a vehicle by exerting a damping effect on the torsional vibration and face swing vibration of a rotor such as a crank pulley. CONSTITUTION:A bottomed cylindrical hub member 2 is provided rotatively integrally with a shaft, and a sleeve member 3 having an outer diameter smaller than the inner diameter of a crank pulley 1 is freely coupled on the outer periphery of the hub member 2. A rubber 4 is provided between the sleeve member 3 and the crank pulley 1, and the torsional vibration of the crank pulley 1 is damped by the rubber 4. Circular plate springs 5 connected to the hub member 2 and the sleeve member 3 in turn at nearly a uniform interval in the peripheral direction are arranged at one end side of them, and the face swing vibration of the crank pulley 1 is suppressed by the plate springs 5.
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Patent Agency Ranking
公开(公告)号：JPH01195918A
公开(公告)日：1989-08-07
申请号：JP2169688
申请日：1988-01-30
Applicant: MAZDA MOTOR
Inventor： IWAMOTO AKIRA , OSAKI IZUMI , ARAKAWA MASAMI , SUDO YASUHIRO
Abstract: PURPOSE:To prevent misfire by increasing exhaust gas pressure at an exhaust gas lead-in port only during high speed rotation in low load region. CONSTITUTION:A pressure wave supercharger 3 comprises a rotor 9 supported rotatably in a case with many barrier walls 12 forming many cells 11 being arranged radially, intake air lead-in port 14 and delivery port 15 formed through an air casing 13 at one end of the rotor 9 and discharge gas lead-in port 17 and delivery port 18 formed through a gas casing 16 at the other end of the rotor 9. When the rotor 9 rotates, pressure wave energy of exhaust gas is transmitted to intake air thus supercharging the intake air. Means for increasing exhaust gas pressure at the exhaust gas lead-in port 17 and means for operating the pressure increase means only during high speed rotation in low load region are further provided. Since exhaust gas temperature at the exhaust gas lead-in port 17 is increased, pressure wave propagation speed increases to increase exhaust gas energy in the cell 11 thus promoting discharge of exhaust gas from the cell 11 and lead-in of fresh air into the cell 11.
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公开(公告)号：JPS63162932A
公开(公告)日：1988-07-06
申请号：JP31049086
申请日：1986-12-25
Applicant: MAZDA MOTOR
Inventor： SUDO YASUHIRO , KATAMOTO TATSUO
Abstract: PURPOSE:To strengthen a swirl in a low revolution region by installing a surge tank onto the upstream side of an intake passage and forming plurality of extension passages opened into the surge tank. CONSTITUTION:A surge tank 6 is installed onto the upstream side of an intake passage 5. A plurality of extension passages 7, 8 opened into the surge tank 6 are formed. An opening/closing valve 10 for cutting off the extension passages 7, 8 are installed to close the extension passage 8 in the low revolution region. Therefore, a strong swirl is generated by the curving at a sharp angle at the leftward turn of an intake port 2, and the swirl in the low revolution region can be strengthened.
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公开(公告)号：JP2013185534A
公开(公告)日：2013-09-19
申请号：JP2012052719
申请日：2012-03-09
Applicant: Mazda Motor Corp , マツダ株式会社
Inventor： IWATA HIROAKI , HAYASHI YUKITERU , KIKUCHI MASAKAZU , SUDO YASUHIRO , YAMAUCHI TOMOHIRO , MORI TSUNEHIRO , OKAZAWA HISASHI , SATO MASAAKI , MARUMOTO MASAHARU , OTSUKI TAKESHI , MASUOKA DAICHI
IPC: F01M1/16
Abstract: PROBLEM TO BE SOLVED: To suppress occurrence of abnormal noise immediately after an oil pump is driven due to intrusion of air taken in an oil chamber of a relief valve at stop of an oil pump.SOLUTION: The device is provided with a control part 34 which takes a relief oil pressure as a low pressure side relief oil pressure by communicating an oil chamber 60 at one end of a relief valve 23 to a supply passage 12 via a second control passage 36 and a third control passage 44 when engine rotation speed is less than a switch rotation speed; and as high pressure side by communicating the oil chamber 60 to a supply passage 12 via a first control passage 24 and the third control passage 44 when engine rotation speed is not less than the switch rotation speed. While a control condition is established at engine start in which engine rotation is less than switch rotation speed, a switch valve 26 is controlled so as to open the oil chamber 60 to the outside via a drain passage 38, a second control passage 36 and third control passage 44.
Abstract translation: 要解决的问题：在油泵停止时由于吸入安全阀的油室中的空气的侵入而在油泵被驱动之后立即抑制异常噪声的发生。解决方案：该装置设置有控制部分34 其通过在发动机转速为第二控制通路36和第三控制通道44时将溢流阀23的一端的油室60连通到供给通路12而将减压油压作为低压侧泄压油压 小于开关转速; 并且当发动机转速不小于开关转速时，通过第一控制通道24和第三控制通道44将油室60连通到供给通道12，作为高压侧。 虽然在发动机起动时在发动机起动时建立控制条件，其中发动机转速小于开关转速，但是切换阀26被控制以经由排放通道38，第二控制通道36和第三控制通道36将油室60打开到外部 控制通道44。
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公开(公告)号：JP2011106385A
公开(公告)日：2011-06-02
申请号：JP2009264097
申请日：2009-11-19
Applicant: Mazda Motor Corp , マツダ株式会社
Inventor： ABE HISAMOTO , TOMIZAWA KAZUHIRO , NAKAHARA KOJI , NAGATO KIYONORI , SUDO YASUHIRO , HOSOKAWA KOJI , MIYAUCHI YUMA , NISHIKAWA JUN , TOROU OSAMU , ABE HIROYUKI , MATSUOKA KAZUHIRO
IPC: F02F1/00
CPC classification number: F16J15/0825 , F16J15/064 , F16J2015/085
Abstract: PROBLEM TO BE SOLVED: To suppress vibration of an overhanging part and noise caused by the vibration while suppressing weight increase of an engine in a structure in which the overhanging part such as a reinforcement rib and the like of a flange portion for connecting transmissions is provided on an upper end of a rear portion of a cylinder block.
SOLUTION: In a structure in which a cylinder block 10 and a cylinder head 20 are connected to each other via a metal sheet gasket 30, an overhanging part 14 comprising a reinforcement rib is provided on an abutting surface of the cylinder block 10 and projecting parts 26, 27 are provided opposite to the overhanging part 14 on an abutting surface of the cylinder head 20. Extending pieces 38, 39 are provided on the metal sheet gasket 30 to be extended from its body part and positioned between the overhanging part 14 of the cylinder block 10 and the projecting parts 26, 27 of the cylinder head 20. Elastic repulsion parts 38a, 39a are provided on the extending pieces 38, 39 to be interposed in a pressured state between the overhanging part 14 and the projecting parts 26, 27.
COPYRIGHT: (C)2011,JPO&INPITAbstract translation: 要解决的问题：为了抑制突出部分的振动和由振动引起的噪音，同时抑制在用于连接的凸缘部分的诸如加强肋等的突出部分的突出部分的发动机的发动机的重量增加 在气缸体的后部的上端设置有变速器。 解决方案：在气缸体10和气缸盖20经由金属板垫圈30彼此连接的结构中，包括加强肋的悬伸部14设置在气缸体10的抵接表面上 并且突出部26,27与气缸盖20的抵接面上的伸出部14相对地设置。延伸部38,39设置在金属板垫片30上，从其主体部延伸并位于突出部 气缸体10的突出部分14和气缸盖20的突出部分26,27。弹性排斥部分38a，39a设置在延伸部分38,39上，以在突出部分14和突出部分之间处于加压状态 26，27.版权所有（C）2011年，JPO＆INPIT
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公开(公告)号：JPS63201333A
公开(公告)日：1988-08-19
申请号：JP3653187
申请日：1987-02-18
Applicant: MAZDA MOTOR
Inventor： KUNIYOSHI MAKOTO , SUDO YASUHIRO , TETSUKAWA RYUZO
Abstract: PURPOSE:To reduce NOx and improve output by increasing the quantity of lead angle in a medium speed zone as well as the change in lead angle in a high speed zone at a warm time, whereas, at a cold time, correcting the quantity of lead angle in a low speed zone toward the advancing direction while making the number of revolutions for increasing a lead angle to the high speed zone smaller than at the warm time. CONSTITUTION:When flyweights 7, 8 are moved in the separating direction from each other, first cams 9, 10 are rotated in the direction in which first pin holes 11a, 12a are separated from each other. At the same time, second cams 13, 14 are rotated so that the distance between second pins 15, 16 is not varied. And, the relative angle positions of first pins 11, 12 are changed with respect to the second pins 15, 16 respectively centering around an output shaft 5. Thereby, the phase difference between a flange 6 as an input part and the output shaft 5 is varied changing fuel injection timing. In this case, i.e., during a cold time, the spring force of a spring 35 is larger than the spring force of timer springs 22, 23 while the centrifugal force generated in flyweights 7, 8 is small, thereby, making the quantity of lead angle constant.
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