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1. 发明专利

JP2000170514A VARIABLE VALVE CONTROLLER 失效
公开(公告)号：JP2000170514A
公开(公告)日：2000-06-20
申请号：JP34985698
申请日：1998-12-09
申请人： DENSO CORP , TOYOTA MOTOR CO LTD
发明人： SUGIE NOBUHIKO , YAMAGUCHI JOJI , SATO OSAMU , MORIYA YOSHITO , IDONO NORIYUKI , KIKUOKA SHINICHIRO
IPC分类号： F01L1/34 , F01L1/344 , F01L1/46 , F01L13/00
摘要： PROBLEM TO BE SOLVED: To provide a variable valve controller capable of improving phase variable responsiveness. SOLUTION: A minimum hydraulic oil pressure for controlling a vane rotor 63 is equal to or higher than a minimum hydraulic oil pressure for controlling a piston member 57, and a piston member 51 is hydraulic-controlled to such a level that an intake camshaft 3 is not moved from a lowest lifting position toward a high lifting position or from a highest lifting position toward a low lifting direction. Thus, when the phase of the intake camshaft 3 is made variable, the piston member 57 is always made variable. Therefore, even when the intake camshaft 3 is held in the lowest lifting position or the highest lifting position, by making the piston member 57 variable from the lowest lifting position toward the high lifting direction or from the highest lifting position toward the low lifting direction, the phase control of the intake camshaft 3 is highly accurately performed for a timing pulley 60, and the phase variable responsiveness of the intake camshaft 3 is improved.

2. 发明专利

JP2001046910A EXHAUST EMISSION CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JP2001046910A
公开(公告)日：2001-02-20
申请号：JP22203099
申请日：1999-08-05
申请人： DENSO CORP
发明人： KATSUTA HIROYUKI , ARAKAWA MIYAO , SUGIE NOBUHIKO
IPC分类号： B01D53/34 , B03C3/02 , B03C3/08 , B03C3/155 , B03C3/38 , B03C3/68 , F01N3/08
摘要： PROBLEM TO BE SOLVED: To improve the electric power controlling method for a discharge type exhaust emission control device. SOLUTION: In this exhaust emission control device, the exhaust gas of an internal combustion engine is purified by passing to a flow passage formed between at least a pair of discharge electrodes and applying AC high voltage between the discharge electrodes. In the device, all of pulse of the AC high voltage are applied between the discharge electrodes in high loading where an exhaust gas flow rate is maximum. In middle/low loading where the exhaust gas flow rate is lower than that of high loading, the pulse of the AC high voltage is intermittently thinned out in accordance with the exhaust gas flow rate. In such a way, power supply is lowered in accordance with the exhaust gas flow rate without lowering the applied voltage (discharge capacity) between the discharge electrodes. In the case when the exhaust gas flow rate is low, not only the probability that the exhaust gas meets with the discharge but also the exhaust gas purifying efficiency are not changed so much even if the generating ratio of the discharge is lowered by thinning out the pulse of the AC high voltage since the flow velocity of the exhaust gas passing between the discharge electrodes is lowered.

3. 发明专利

JP2001009232A EXHAUST GAS PURIFYING DEVICE OF INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JP2001009232A
公开(公告)日：2001-01-16
申请号：JP18245399
申请日：1999-06-28
申请人： DENSO CORP
发明人： ARAKAWA MIYAO , KATSUTA HIROYUKI , SUGIE NOBUHIKO
IPC分类号： B01D53/32 , B01D53/92 , B01D53/94 , F01N3/08 , F01N3/20 , F01N3/28
摘要： PROBLEM TO BE SOLVED: To improve engine output and fuel cost by reducing exhaust resistance in an exhaust gas purifying device for purifying exhaust by using electrical discharge. SOLUTION: In the purifying device, a flow passage structure 12 having plural flow passages 13 is formed with a heat resistant insulator (alumina, glass or the like) liable to generate the electrical discharge and having dielectric property. A discharge electrode 14 is embedded by a printing conductor or an electrically-conductive plate at one side of the flow passage structure 12. Plural flow passage structures 12 are laminated and the discharge electrode 14 is placed between each flow passage structure 12. An corrugated plate-like auxiliary electrode 16 is housed respectively in each flow passage 13, and each auxiliary electrode 16 is fixed in each flow passage 13 by spring power itself. Discharge plasma is generated between the discharge electrode 14 and the auxiliary electrode 16 in each flow passage 13 and the exhaust gas flowing in each flow passage 13 is purified by applying high voltage between the discharge electrode 14 placed opposite to each other with interposed each flow passage structure 12.

4. 发明专利

JPH1077852A INTAKE CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE AND INTERNAL COMBUSTION ENGINE HAVING THE DEVICE 失效
公开(公告)号：JPH1077852A
公开(公告)日：1998-03-24
申请号：JP23176696
申请日：1996-09-02
申请人： DENSO CORP , NIPPON SOKEN
发明人： TAKEYAMA MASAKI , YOSHINAGA TORU , IKEDA MASATOSHI , SUGIE NOBUHIKO
IPC分类号： F02B29/08 , F02M35/10
摘要： PROBLEM TO BE SOLVED: To rapidly remove oil, stored in a gap in the lower part of an intake control valve, through simple structure, and ensure responsiveness of a valve element. SOLUTION: To prevent the occurrence of a reverse flow of intake air in the intake pipe 12 of an internal combustion engine 1 and improve filling efficiency, an intake control valve 30 opened and closed at a given timing is disposed between a throttle valve 13 and the intake port 15 of each cylinder. Oil in blowby gas adhered to the valve element of the intake control valve 30 and stored at a lower gap flows in an oil removing valve 40 from a one-way valve through a passage 39 when an internal combustion engine 1 is in a stop state. Oil to disturb operation of the intake control valve 30 is returned in the crank case 4 of an internal combustion engine 1 from the oil removing valve 40 through a passage 49. This constitution ensures responsiveness of the valve element of the intake control valve 30 and improves reliability.

5. 发明专利

JPH09112282A INTAKE CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH09112282A
公开(公告)日：1997-04-28
申请号：JP27137495
申请日：1995-10-19
申请人： DENSO CORP
发明人： SUGIE NOBUHIKO
IPC分类号： F02B29/08 , F02B31/00
摘要： PROBLEM TO BE SOLVED: To hold operating characteristic of an intake control valve in a good condition, at all times. SOLUTION: An intake control valve 14 is arranged on a valve housing 13 connected to the intake branch pipe 12 of an intake manifold 9. The intake branch pipe 12 and a valve housing 13 are arranged slantly in an upper side toward an upstream side. The intake control valve 14 is provided with a rotary shaft 16 which extends in a direction perpendicular to a paper surface, namely in a horizontal direction, and a valve element 17 installed on the rotary shaft 16. An intake control valve closing range (a dead zone) for holding the valve element 17 of the intake control valve 14 in a valve closing condition is arranged on the way of the intake passage 13a of the housing 13. In this case, the intake passage 13a which communicates with a combustion chamber 8 from the bottom part of the dead zone is arranged aside so as to face to a horizontal surface or a side lower than the horizontal surface, and oil and the like which are invaded into the dead zone is supplied from a rim part communicating with the combustion chamber 8 of the dead zone to the combustion chamber 8 side passing the intake passage 13a.

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