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21.发明专利
公开(公告)号：JP2008210340A
公开(公告)日：2008-09-11
申请号：JP2007048904
申请日：2007-02-28
Applicant: Mazda Motor Corp , マツダ株式会社
Inventor： KODAMA SHIN , KUSUNOKI YASUTOMO , YAMADA TAKAYUKI , NAITO MASAHIRO
Abstract: PROBLEM TO BE SOLVED: To provide a cylinder head design support method and the like capable of improving design efficiency and development efficiency independently of a difference in engine types of a gasoline engine and a diesel engine.
SOLUTION: The cylinder head design support method comprises: a common portion selection step for selecting portions (an injector, a valve system, etc.) having common specifications independently of a difference in two engine types between the gasoline engine and the diesel engine; a different portion selection step for dividing portions (combustion rooms, suction ports and plug insertion parts) having different specifications in the two engine types of the gasoline engine and the diesel engine as units and selecting portions corresponding to each engine type from these portions; and a cylinder head model setup step for setting a cylinder head model of the gasoline engine or the diesel engine on the basis of the portions selected by the common portion selection step and the portions selected by the different portion selection step.
COPYRIGHT: (C)2008,JPO&INPITAbstract translation: 要解决的问题：提供一种能够独立于汽油发动机和柴油发动机的发动机类型的差异而提高设计效率和开发效率的气缸盖设计支撑方法等。 气缸盖设计支撑方法包括：公共部分选择步骤，用于选择具有独立于汽油发动机和柴油机之间的两种发动机类型的差异的共同规格的部分（喷射器，阀系统等） 发动机; 在两种发动机类型的汽油发动机和柴油发动机中分别具有不同规格的部分（燃烧室，吸入口和插头插入部）作为单元并且从这些部分选择与每种发动机类型对应的部分的不同部分选择步骤; 以及气缸盖模型设置步骤，用于基于由公共部分选择步骤选择的部分和由不同部分选择步骤选择的部分来设置汽油机或柴油发动机的气缸盖模型。 版权所有（C）2008，JPO＆INPIT
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公开(公告)号：JP2008050949A
公开(公告)日：2008-03-06
申请号：JP2006225430
申请日：2006-08-22
Applicant: Mazda Motor Corp , マツダ株式会社
Inventor： NAITO MASAHIRO , TATEISHI SATOSHI , SASADA TAKUJI
CPC classification number: F01M13/0416 , F01L1/053
Abstract: PROBLEM TO BE SOLVED: To provide an oil separator device for an engine capable of preventing oil from being carried to an introduction opening part without discretion while securing a large oil separator space.
SOLUTION: The introduction opening part 86 of blow-by gas in a space part 4 is formed out of an end part of a lower wall plate 81 and an end wall part of a cylinder head cover 1 in an axial direction of a camshaft 9. A camshaft 9 is arranged at a lower part of the space part 4. A housing 7 shielding a rotary drive system including the camshaft 9 from an outside is provided on a top surface of a cylinder head 1 in an end part side of the camshaft 9. A seal end part corresponding to the housing 7 is formed on an end wall part of the cylinder head cover 1, and a baffle part 71 extending in an axial direction of the camshaft 9 is formed on the housing 7 with keeping an interval in a vertical direction with a lower part of the introduction opening part 86.
COPYRIGHT: (C)2008,JPO&INPITAbstract translation: 要解决的问题：提供一种用于发动机的油分离器装置，其能够在确保大的油分离器空间的同时无限制地将油运送到引入开口部分。 解决方案：空气部分4中的窜气的引入开口部86从下壁板81的端部和气缸盖罩1的端壁部分沿轴向方向形成 凸轮轴9设置在空间部分4的下部。在气缸盖1的顶部表面上设置有从外部屏蔽包括凸轮轴9的旋转驱动系统的壳体7的端部侧 凸轮轴9.在气缸盖罩1的端壁部分形成有对应于壳体7的密封端部，并且在壳体7上形成有沿凸轮轴9的轴向延伸的挡板部分71， 导入开口部86的下部与上下方向的间隔。（C）2008，JPO＆INPIT
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公开(公告)号：JP2004245068A
公开(公告)日：2004-09-02
申请号：JP2003033213
申请日：2003-02-12
Applicant: Mazda Motor Corp , マツダ株式会社
Inventor： NAITO MASAHIRO , FUKUMA MASANARI , SHIMIZU KOICHI
CPC classification number: F01L1/022 , F01L1/024 , F01L1/34 , F01L2001/0537 , F01L2001/34426 , F01L2001/34433 , F01L2820/041 , F01M9/10
Abstract: PROBLEM TO BE SOLVED: To provide a variable valve system for an engine capable of maintaining the high detection accuracy of a rotation angle sensor installed near a camshaft.
SOLUTION: The rotation angle sensor 43 and a hydraulic control valve 14 are arranged in such positional relationship that the tip detecting surface 43a of the rotation angle sensor 43 disposed close to a sensor rotor 42 assembled to an exhaust camshaft 5 faces the inside of a jet locus S of return oil discharged from a variable valve timing mechanism and jetted from a drain hole 3e provided in a cam cap 3, via a lower drain port of the hydraulic control valve 14 fitted to the cam cap 3. Further, the tip detecting surface 43a is positioned ahead in the rotating direction of the exhaust camshaft 5 shown by an arrow mark (a) so that the return oil is positively carried to the tip detecting surface 43a side by the rotation of the sensor rotor 42.
COPYRIGHT: (C)2004,JPO&NCIPI-
公开(公告)号：JPH0626333A
公开(公告)日：1994-02-01
申请号：JP17955692
申请日：1992-07-07
Applicant: MAZDA MOTOR
Inventor： NAKAO MASAMI , NAKANE HISANORI , NAITO MASAHIRO
IPC: F01N3/22
Abstract: PURPOSE:To suppress the response delay of secondary air supply quantity generated in association with the gear position changeover of a transmission so as to secure desirable emission performance in an engine with a supercharger provided with a secondary air supply device for supplying part of air supercharged by the supercharger, as the secondary air to an exhaust system, by the demand quantity corresponding to the operating state of the engine. CONSTITUTION:When there is the gear position changeover of a transmission 4, the opening of a duty solenoid valve 19 in a secondary air supply device 17 is corrected accordingly to perform the correction control of secondary air supply capacity. Accordingly, even if supercharging pressure is changed in association with the changeover of the transmission 4, there is no response delay in secondary air supply changeover.
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公开(公告)号：JP2014163223A
公开(公告)日：2014-09-08
申请号：JP2013031898
申请日：2013-02-21
Applicant: Mazda Motor Corp , マツダ株式会社
Inventor： MATSUMOTO DAISUKE , TABATA DAISUKE , NAITO MASAHIRO
CPC classification number: F01P3/02 , F01P3/20 , F01P5/10 , F01P2003/021 , F01P2003/024 , F01P2003/027 , F01P2003/028 , F01P2060/00 , F01P2060/16 , F02F1/10 , F02F1/14 , F02F1/40
Abstract: PROBLEM TO BE SOLVED: To provide a cooling device for a multi-cylinder engine, in which whole cylinders are made to have uniform temperature distribution by suppressing a temperature difference in the vertical direction of each cylinder, a temperature difference between the exhaust side and the intake side of each cylinder, and a temperature difference among the cylinders.SOLUTION: A cylinder block includes: an introduction part which is provided on one end side of a cylinder row and introduces cooling liquid into a water jacket; a restriction part which is provided near the introduction part and restricts the flow of the cooling liquid introduced from the introduction part into an intake side portion of the water jacket; and a discharge part which is provided in the middle of the cylinder row on the intake side and discharges the cooling liquid from the water jacket. An exhaust side portion of the water jacket is formed so that its flow path cross sectional area is larger on the upper side in a cylinder shaft direction than on the lower side.
Abstract translation: 要解决的问题：为了提供一种多缸发动机的冷却装置，其中通过抑制每个气缸的垂直方向的温差使整个气缸具有均匀的温度分布，排气侧和 每个气缸的进气侧和气缸之间的温度差。解决方案：气缸体包括：引导部，其设置在气缸排的一端侧，并将冷却液引入水套; 限制部，其设置在所述导入部附近，限制从所述导入部导入到所述水套的吸入侧部的冷却液的流动; 以及设置在进气侧的气缸排的中间并从水套排出冷却液的排出部。 水套的排气侧部分形成为使得其流路横截面积在缸轴方向的上侧比在下侧更大。
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Patent Agency Ranking
公开(公告)号：JP2004162639A
公开(公告)日：2004-06-10
申请号：JP2002330648
申请日：2002-11-14
Applicant: Mazda Motor Corp , マツダ株式会社
Inventor： FUKUMA MASANARI , NAITO MASAHIRO , SHIMIZU KOICHI , TAKAHASHI IKUMA , TOMIZAWA KAZUHIRO
IPC: F01L1/34
Abstract: PROBLEM TO BE SOLVED: To provide a variable valve timing device for an engine capable of surely or easily returning an exhaust camshaft in an advanced angle direction while stopping the engine or when starting the engine.
SOLUTION: An annular groove 100 of an oil path 63 for a delayed angle on the exhaust camshaft 6 side is provided close to an end part in a width direction on a bearing surface 82 of a cam cap 4 as compared with an annular groove 101 of an oil path 62 for an advanced angle. The annular groove 100 of the oil path 63 for the delayed angle is provided close to an end part on a phase variable mechanism 23 side on the bearing surface 82 of the cam cap 4. The annular groove 101 of the oil path 62 for the advanced angle is provided at almost the center in the width direction on the bearing surface 82 of the cam cap 4.
COPYRIGHT: (C)2004,JPO-
公开(公告)号：JPH0821229A
公开(公告)日：1996-01-23
申请号：JP17320394
申请日：1994-06-30
Applicant: MAZDA MOTOR
Inventor： NIWA YASUSHI , NAITO MASAHIRO , NAKAO MASAMI
IPC: F01N3/22
Abstract: PURPOSE:To improve the purifying factor of HC, CO without causing overheating of a catalyst of an exhaust system by alternately supplying secondary air in the upstream s4-4 of all catalytic devices and between the catalytic devices when it is judged that the catalyst temperature state is in the specific high temperature state. CONSTITUTION:The secondary air supply is switched and controlled by a switching valve unit 26 since the supplying position is switched and controlled so as to be positioned in the exhaust downstream as a load of an engine 1 is large basically in the air fuel ratio feedback control range. Port air is supplied within the right load range to which the air-fuel ratio feedback is not subjected, and presplit air is supplied within the middle load range wherein the feedback condition is satisfied, and split air is supplied within the specific high load range. Presplit air is supplied instead of port air in the low outside air temperature starting such as below the freezing point. Thus, overheating of the catalyst can be prevented by restraining the oxidation reaction of a precatalyzer 19 in a state where the temperature of the catalyst is raised by the increase of fuel.
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公开(公告)号：JPH0814119A
公开(公告)日：1996-01-16
申请号：JP16889594
申请日：1994-06-27
Applicant: MAZDA MOTOR
Inventor： NIWA YASUSHI , NAITO MASAHIRO , NAKAO MASAMI
Abstract: PURPOSE:To realize a large quantity of purge by enlarging the gradually increasing speed of a purge quantity as much as possible in the range of generating no change of air-fuel ratio at beginning purge. CONSTITUTION:In the early period of beginning purge, a purge quantity is gradually increased up to a required quantity. A time from the stop of purge in the last time to the beginning of purge in this time is measured, and when purge is begun within a setting time, change of purge concentration is estimated to be small so as to enlarge the inclination of rise of purge rate (A), and when purge is begun after the setting time, change of purge concentration is estimated to be large so as to reduce the inclination of rise of purge rate (B). Otherwise, changing condition of purge concentration is estimated by detecting difference of air-fuel ratios in the last time and this time in the early period of beginning purge, and hence inclination of rise of purge rate is changed. In addition, the inclination of rise of purge rate is also changed by fuel temperature, a fuel remaining quantity, existence of oil feed, existence of quick turning, and the like.
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公开(公告)号：JPH084523A
公开(公告)日：1996-01-09
申请号：JP15938494
申请日：1994-06-16
Applicant: MAZDA MOTOR
Inventor： NIWA YASUSHI , NAITO MASAHIRO
Abstract: PURPOSE:To prevent the entry of impurities into a pressurizing means when an inlet port to lead the combustion component containing impurities such as blowby gas into an air intake passage is opened in the upstream of a secondary air take-in port, in a device in which secondary air led from the secondary air take-in port opened to the air intake passage is pressurized by a pressurizing means and fed to an exhaust system. CONSTITUTION:A secondary air passage 62 is connected to a secondary air take-in port 61 opened to the merged part 23 of first and second air intake passages 22a and 22b, and the secondary air passage 62 is led to an air control valve unit 64 through an air pump 63. Also the secondary air passage is connected to the control valve unit 64, and a presplit air feed passage 66 and a split air feed passage 68 are led to the downstream exhaust passages 36, respectively. In this case, an air cut valve is installed in the secondary air passage 62 in the upstream of an air pump 63, and the air cut valve is closed when it is operated so that blowby gas and the like is liable to be produced.
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公开(公告)号：JPH06221142A
公开(公告)日：1994-08-09
申请号：JP1431593
申请日：1993-01-29
Applicant: MAZDA MOTOR
Inventor： NAKANE HISANORI , NAITO MASAHIRO , SHIMOYAMA HIROSHI , TAKANO SUSUMU , INAGI KOJI
Abstract: PURPOSE:To provide an engine air intake system which is designed to prevent the occurrence of deficiency in the feed of secondary air during engine low load, the occurrence of deficiency of engine intake air during engine high load and occurrence of worseuing of fuel consomption. CONSTITUTION:An air pump 11 to feed secondary air is provided and a control means 10 is provided with an air pump control means 10A to control the starting and the stop of the air pump 11.
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