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41. 发明专利

JPS6285144A VIBRATION REDUCING DEVICE FOR CYLINDER NUMBER CONTROL ENGINE 失效
公开(公告)号：JPS6285144A
公开(公告)日：1987-04-18
申请号：JP22538285
申请日：1985-10-09
申请人： MAZDA MOTOR
发明人： UMEMURA KYOICHI , MASUDA TOSHIHARU , TERAMOTO TAKAFUMI
IPC分类号： F02D17/02
摘要： PURPOSE:To control the torque variation thoroughly and prevent vibration increase, by introducing the intake negative pressure in an intake passage at the down stream of a throttle valve in the operating side cylinder to the halted side cylinder when the load is decreased in a partial cylinders operating area. CONSTITUTION:A gas pressure leading passage 21 is furnished to link to a combustion chamber 3 of a halted side cylinder with an intake and an exhaust valves 10 and 11 which are kept closed by the actions of actuators 12 and 13, to make it possible to introduce the gas pressure in a pressure adjusting tank 20 to the combustion chamber 3 in a partial cylinders operating condition. At the pressure adjusting tank 20, are furnished an atmospheric pressure lead valve 26 and a negative pressure lead valve 27, to compose a pressure adjusting device 30. Also a link 31 is furnished to link an intake passage 4b at the down stream of a throttle valve 6 in the operating side cylinder 1B and the halted side cylinder 1A, and at the opening of the link 31 to the pressure adjusting tank 20, is furnished the said negative pressure lead valve 27 as a switch valve. In such a composition, the negative pressure lead valve 27 is opened when the load is decreased in a partial cylinders operating area.

42. 发明专利

JPS6285142A VIBRATION REDUCING DEVICE FOR CYLINDER NUMBER CONTROL ENGINE 失效
公开(公告)号：JPS6285142A
公开(公告)日：1987-04-18
申请号：JP22538085
申请日：1985-10-09
申请人： MAZDA MOTOR
发明人： TERAMOTO TAKAFUMI , UMEMURA KYOICHI , MASUDA TOSHIHARU
IPC分类号： F02D13/06 , F02D17/02
摘要： PURPOSE:To control the torque variation thoroughly and prevent the vibration increase despite a sudden variation of the operation condition, by converting the compression ratio of the halted side cylinder according to the combustion pressure of the operating side cylinder, and approaching the compression pressure of the former to the combustion pressure of the latter. CONSTITUTION:An atmospheric opening passage 20 is furnished to like to a combustion chamber 3 of the halted side cylinder 1A with an intake and an exhaust valves 10 and 11 which are kept closed by the actions of actuators 12 and 13 respectively, and its end at the upper stream side is opened to the upper stream of a throttle valve 6 of a main intake passage 4. At the opening of the atmospheric opening passage 20 to the combustion chamber 3 of the halted side cylinder 1A, is furnished a pressure ratio adjusting valve 21 to switch the passage 20, which is opened or closed by an actuator 22, to composed a pressure ratio variation device 23. The pressure ratio variation device 23 is controlled depending on a required pressure ratio which is found at a control unit 45 based on the engine rotations and the intake pressure at the operating side cylinder 1B.

43. 发明专利

JPS6285141A VIBRATION REDUCING DEVICE FOR CYLINDER NUMBER CONTROL ENGINE 失效
公开(公告)号：JPS6285141A
公开(公告)日：1987-04-18
申请号：JP22537985
申请日：1985-10-09
申请人： MAZDA MOTOR
发明人： UMEMURA KYOICHI , TERAMOTO TAKAFUMI , MASUDA TOSHIHARU
IPC分类号： F02D13/06 , F02D17/02
摘要： PURPOSE:To reduce a shock at the time when the engine returns from a partial cylinders operation to the all cylinders operation, by opening the intake valve after reducing the pressure in the halted side cylinder by opening the opening valves of the atmospheric side opening passages except the fuel feeding passage at the halted side cylinder in such a return to the all cylinders operation. CONSTITUTION:A gas pressure leading passage 21 is furnished to link to a combustion chamber 3 of the halted side cylinder 1A with an intake and an exhaust valves 10 and 11 which are kept closed by the actions of actuators 12 and 13 respectively, in order to make it possible to introduce the gas pressure in a pressure adjusting tank 20 to the combustion chamber 3 in a partial cylinders operation. In such am composition, the gas pressure in the halted side cylinder 1A is increased and the compression pressure therein is made to approach the combustion pressure of the operating side cylinder 1B. And when the returning time from the partial to the all cylinders operation is detected, the exhaust valve (that is, the opening valves of the atmospheric side except the halted side intake passage 4a being a fuel feeding passage) is opened before the intake valve 10 is opened, to reduce the pressure in the halted side cylinder 1A.

44. 发明专利

JPS61149648A CONTROL DEVICE OF VARIABLE FLYWHEEL IN ENGINE 失效
公开(公告)号：JPS61149648A
公开(公告)日：1986-07-08
申请号：JP27064284
申请日：1984-12-24
申请人： MAZDA MOTOR
发明人： MAMIYA KIYOTAKA , TERAMOTO TAKAFUMI , YAMASHITA AKINORI
IPC分类号： F16F15/30 , F02B75/06 , F16F15/31
摘要： PURPOSE:To enable the vibration of an engine to be effectively reduced, by increasing a speed of the engine when it engages a subflywheel at the time of cylinder quantity reducing operation as compared with the time of full cylinder operation. CONSTITUTION:A step S11 reads an engine speed NE and a flag. Thereafter, a step S12 decides whether or not the flag is 1, and a step S14, when the flag is 1 meaning cylinder quantity reducing operation in the step S12, sets an engaging speed NS as a value N2 larger than that when an engine is in full cylinder operation. In this way, a control device, setting the engaging speed NS of a subflywheel 7 in accordance with cylinder quantity reducing and full cylinder operation of the engine 1, enables a vibration of the engine to be effectively reduced.

45. 发明专利

JPS61149636A CONTROL DEVICE OF VARIABLE FLYWHEEL IN ENGINE 失效
公开(公告)号：JPS61149636A
公开(公告)日：1986-07-08
申请号：JP26852184
申请日：1984-12-21
申请人： MAZDA MOTOR
发明人： TERAMOTO TAKAFUMI , YAMASHITA AKINORI , MAMIYA KIYOTAKA
IPC分类号： F16F15/30 , F02B75/06 , F02B77/00 , F16F15/31
摘要： PURPOSE:To reduce a vibration in a speed changer, by regulating the engaging speed of a subflywheel on the basis of an oil temperature in the speed changer relating to its vibration. CONSTITUTION:Of the sensors 32-35, the sensor 32, being substantially constituted of a distributor, detects an engine speed. The sensor 33 detects a temperature of oil in a speed changer 2. And when the temperature of oil in relation to an increase of vibration in the speed changer 2 increases, a control device, increasing the engine speed when a subflywheel 7 is engaged, causes this subflywheel 7 to effectively reduce the vibration particularly a tooth tapping sound in the speed changer 2.

46. 发明专利

JPS61144448A VARIABLE FLYWHEEL CONTROL EQUIPMENT FOR ENGINE 失效
公开(公告)号：JPS61144448A
公开(公告)日：1986-07-02
申请号：JP26609984
申请日：1984-12-19
申请人： MAZDA MOTOR
发明人： YAMASHITA AKINORI , MAMIYA KIYOTAKA , TERAMOTO TAKAFUMI
IPC分类号： F16F15/30 , F02B75/06 , F02B77/00 , F16F15/31
摘要： PURPOSE:To enhance the accelerating performance of an engine from its low speed revolution region by constituting the system in such a manner that the greater the engine acceleration is, the lower engine speed is required to disengage an auxiliary flywheel. CONSTITUTION:An auxiliary flywheel7 is attached to a main flywheel 6, which is installed to an engine output shaft 4, so that the former can be engaged with or disengaged from the latter. The auxiliary flywheel 7 is engaged with or disengaged from the main flywheel 6 by a solenoid 19, a solenoid-utilized engaging means. The signal detected by an engine acceleration detecting means is corrected by a disengagement-r.p.m.-correcting means in such a manner that the greater the engine acceleration is, the lower is the engine speed at which disengagement of the auxiliary flywheel 7 takes place. After this correcting means is taken, driving current is supplied to the solenoid 19 through an auxiliary flywheel control means.

47. 发明专利

JPH06241077A GAS FUEL ENGINE 失效
公开(公告)号：JPH06241077A
公开(公告)日：1994-08-30
申请号：JP2407693
申请日：1993-02-12
申请人： MAZDA MOTOR
发明人： TERAMOTO TAKAFUMI
IPC分类号： F02B53/02 , F02D19/02 , F02D41/02 , F02D41/04 , F02D41/34 , F02M21/02
摘要： PURPOSE:To provide a gas fuel engine which can reduce the amount of NOx generation while enhancement of the charging efficiency and the enhancement of the fuel consumption performance are ensured compatibly. CONSTITUTION:In a rotary piston engine RE which uses hydrogen as fuel, the hydrogen gas is supplied directly to working chambers 5a, 5b, 5c from a hydrogen injection port 51 in the initial period of the compression stroke in the region that the excess air factor lambda lies on the richer side than the boundary excess air factor lambda0 (for example. 1.5 approximately), and over-rise of the combustion temp. of the mixture gas is suppressed, and the amount of NOx generation is reduced, and also the charging efficiency is heightened. In the region that the excess air factor lambda lies on the leaner side than the boundary excess air factor lambda0, the hydrogen gas is supplied to a common suction passage 21 via a hydrogen mixer 25 so that the mixture gas is homogenized, and the mixture gas is precluded from therein generating a rich portion or portions locally, and over-rise of the combustion temp. locally is precluded along with reduction of the amount of NOx generation, and also the thermal efficiency is heightened and the fuel consuming performance is enhanced.

48. 发明专利

JPH05321690A METHOD AND DEVICE FOR STARTING GASEOUS FUEL ENGINE 失效
公开(公告)号：JPH05321690A
公开(公告)日：1993-12-07
申请号：JP13078392
申请日：1992-05-22
申请人： MAZDA MOTOR
发明人： TERAMOTO TAKAFUMI , MORIMOTO KENJI , TAKANO EIJI , FUKUMA TSUTOMU
IPC分类号： F02B43/10 , F02D19/02 , F02M21/02
摘要： PURPOSE:To prevent generation of backfire and/or afterburn by increasing flow speed of residual gaseous fuel in an intake system and/or an exhaust system gradually, and then starting an engine by engine cranking in a condition where supply of the gaseous fuel is disconnected in engine starting operation. CONSTITUTION:Hydrogen flow regulation valves 12, 13 and a closed type solenoid valve 14 are provided in a hydrogen supply line 9b downstream of a pressure regulator 10, and a hydrogen injection valve 15 is provided in hydrogen supply lines 9c, 9d downstream of it to inject hydrogen gas. When both hydrogen concentrations in an exhaust passage 47 and an intake passage 39 by hydrogen sensors 78A, 78B are determined to exceed a set value, a pump 76 is actuated to open valves in gas passages 73, 74, and exhaust gas in a tank 71 is gradually introduced into the exhaust passage 47 and the intake passage 39, so residual hydrogen gas is discharged in such a mode that its flow speed is gradually increased. The solenoid valve 14 is then opened for starting. Backfire and/or afterburn is thus prevented.

49. 发明专利

JPH05321689A METHOD OF SCAVENGE OF GASEOUS FUEL ENGINE AND DEVICE THEREFOR 失效
公开(公告)号：JPH05321689A
公开(公告)日：1993-12-07
申请号：JP13077492
申请日：1992-05-22
申请人： MAZDA MOTOR
发明人： KADOTA HIROSHI , DOSONO KAZUYASU , UCHIDA HIROYASU , TERAMOTO TAKAFUMI
IPC分类号： F02B43/10 , F02B53/00 , F02D17/00 , F02D19/02 , F02M21/02
摘要： PURPOSE:To prevent afterburn by replacing at least residual gaseous fuel in an exhaust system by non-combustible gas in a condition where supply of the gaseous fuel is disconnected before enging starting operation and/or when an engine is stopped. CONSTITUTION:Hydrogen flow regulation valves 12, 13 and a closed type solenoid valve 14 are provided in a hydrogen supply line 9b downstream of a pressure regulator 10, and hydrogen gas is injected from a hydrogen injection valve 15 through hydrogen supply lines 9c, 9d downstream of it. A controller 70 closes the solenoid valve 14 to disconnect supply of hydrogen gas when an ignition switch is at an OFF position, and when an engine rotation speed becomes a specified value or less, a changing valve 73 is opened to actuate a power-driven air pump 71 to supply air to an intake passage 39. When the engine rotation speed becomes zero, a changing valve 75 is opened to supply air to an exhaust passage 46. When time is up, the power-driven air pump 71 is stopped, and the changing valves 73, 75 are closed. Afterburn is thus prevented.

50. 发明专利

JPH05215013A FUEL SUPPLY DEVICE FOR GASEOUS FUEL ENGINE 失效
公开(公告)号：JPH05215013A
公开(公告)日：1993-08-24
申请号：JP1789192
申请日：1992-02-03
申请人： MAZDA MOTOR
发明人： UCHIDA HIROYASU , FUKUMA TSUTOMU , TERAMOTO TAKAFUMI , DOSONO KAZUYASU
IPC分类号： F02B53/10 , F02D19/02 , F02M21/02
摘要： PURPOSE:To sufficiently secure a requirement amount of gaseous fuel in a high intake amount area, particularly to improve control accuracy of the gaseous fuel in a low intake amount area where high accuracy is required in fuel controlling in an engine which uses the gaseous fuel such as hydrogen gas. CONSTITUTION:A gaseous fuel supply system has a first flow rate adjusting means provided with a flow rate adjusting valve 25 and a timing valve 26 which vary a flowing area, and a second fuel rate adjusting means which has an injector 40, parallelly arranged thereto. A control means 41 is provided such that the second fuel rate adjusting means is operated alone in a low intake amount area of an engine, while at least the first fuel rate adjusting means is operated in a high intake amount area of the engine.

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