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1. 发明专利

JP2006183511A Control device of internal combustion engine 有权
标题翻译：内燃机控制装置
公开(公告)号：JP2006183511A
公开(公告)日：2006-07-13
申请号：JP2004376165
申请日：2004-12-27
申请人： Mitsubishi Motors Corp , 三菱自動車工業株式会社
发明人： SAITO KENJI , HIGUCHI YOSHIAKI , KAMURA HITOSHI
IPC分类号： F02D45/00 , F01N3/20 , F01N3/24 , F02D21/08 , F02D41/02 , F02D41/22 , F02P5/15
CPC分类号： F02D41/1455 , F01N11/007 , F01N2900/0421 , F02D41/1441 , F02D41/22 , Y02T10/22 , Y02T10/47
摘要： PROBLEM TO BE SOLVED: To provide a control device of an internal combustion engine capable of judging a catalyst malfunction based on the worsening of exhaust gas maintaining the good judgment accuracy, thereby also capable of certainly complying with the strengthening of legal control on exhaust gas.
SOLUTION: When the inverse frequency ratio of an O
2 sensor starts to increase, preceding the malfunction judgment of the three-way catalyst, which is carried out based on the inverse frequency ratio of the O
2 sensors at upstream side and downstream side, the deterioration judgment is carried out, so that low NOx control is carried out. Since the low NOx control is carried out, the deterioration in NOx purification by the three-way catalyst is compensated to suppress the NOx discharge from the three-way catalyst within a regulated value.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种内燃机的控制装置，其能够基于排气恶化来判断催化剂故障，从而保持良好的判断准确性，从而也能够有效地加强法律控制废气
解决方案：当O 2 传感器的反频率开始增加时，在三元催化剂的故障判定之前，基于O的反频率比进行在上游侧和下游侧的传感器，执行劣化判定，从而进行低NOx控制。由于进行低NOx控制，所以补充了三元催化剂的NOx净化的劣化，以抑制来自三元催化剂的NOx排出量在规定值内。版权所有（C）2006，JPO＆NCIPI

2. 发明专利

JPH0968100A RECIPROCATING TYPE INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH0968100A
公开(公告)日：1997-03-11
申请号：JP22424795
申请日：1995-08-31
申请人： MITSUBISHI MOTORS CORP
发明人： HIGUCHI YOSHIAKI , DOUGAHARA TAKASHI , KANEKO KATSUNORI
IPC分类号： F02F3/00 , F02F3/26 , F16J1/02
摘要： PROBLEM TO BE SOLVED: To cope with a demand for severe exhaust gas regulation by more reliably reducing generation of unburnt gas in a top land crevice of a piston. SOLUTION: In an internal combustion engine having a piston 11 having ring grooves 11A having piston rings 12 directly exposed to a combustion chamber 15 in an outer peripheral part, a piston radius RT of a top land 14 part of the piston 11 positioned above the piston rings 12, is set smaller by a necessary length or more than a piston radius RS of a second land 17 part of the piston 11 positioned under the piston rings 12.

3. 发明专利

JPH08218858A EXHAUST GAS PURIFYING DEVICE FOR ENGINE 失效
公开(公告)号：JPH08218858A
公开(公告)日：1996-08-27
申请号：JP4785795
申请日：1995-02-13
申请人： MITSUBISHI MOTORS CORP , MITSUBISHI AUTO ENG
发明人： HIGUCHI YOSHIAKI , DANNO YOSHIRO , DOUGAHARA TAKASHI , FUKAMI YOSHINARI
IPC分类号： F01N3/30 , F01N13/16 , F02B75/22 , F01N7/16
摘要： PURPOSE: To reduce the size of an engine and to form the engine in a compact manner by a method wherein a feed pipe through which secondary air is injected during exhaust to a spot situated upper stream side from a catalyst converter is arranged in the lower space of an exhaust manifold and connected to the lower part of an exhaust manifold. CONSTITUTION: During operation of an engine, exhaust gas from an engine 1 is introduced to catalyst converters 6 and 6 through exhaust manifolds 4 and 4 and exhaust pipes 5 and 5 and after removal of NOX, exhaust gas is exhausted to exhaust pipes 7 and 8. In this case, secondary air is injected in exhaust manifolds 4 and 4 through secondary air feed pipes 9 and 9 to promote catalyst reaction by catalyst converters 6 and 6. Since the secondary air feed pipes 9 and 9 are installed in spaces 15 and 15 below exhaust manifolds 4 and 4, having a surplus space, and in spaces 15 and 15 between the side of the cylinder blocks 11 and the catalyst converters 6 and 6, there is no need to increase the whole width of an engine for installation of the secondary air passages 9 and 9 and holds the whole width of an engine at a minimum limit.

4. 发明专利

JP2005098217A Failure detecting device for variable valve system in internal combustion engine 有权
标题翻译：内燃机可变阀系统故障检测装置
公开(公告)号：JP2005098217A
公开(公告)日：2005-04-14
申请号：JP2003333497
申请日：2003-09-25
申请人： Mitsubishi Motors Corp , 三菱自動車工業株式会社
发明人： HIGUCHI YOSHIAKI , KAMURA HITOSHI
IPC分类号： F01L1/46 , F01L1/34 , F01L13/00 , F02D13/02
CPC分类号： Y02T10/18
摘要： PROBLEM TO BE SOLVED: To provide a failure detecting device for a variable valve system in an internal combustion engine capable of accurately detecting malfunction of a cam phase variable mechanism caused by switching inability of a lock pin, and capable of securely avoiding troubles caused by continuity of inappropriate cam phase control. SOLUTION: A vane rotor 9 is rotatably arranged inside a housing 6 of a timing pulley 4, and connected to a front end of a camshaft 3. A phase of the camshaft 3 is changed by applying oil pressure to the vane rotor 9 in accordance with switching of OCV 30, and when the vane rotor 90 is at a most delayed angle position, the lock pin 16 is switched by oil pressure to fix the vane rotor 9. When the switching of the lock pin 16 is not detected by an oil pressure sensor 41 although the vane rotor 9 is switched to the most delayed angle position, it is determined to be a failure, and phase control of the camshaft 3 is prohibited. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种能够精确地检测由锁销的切换不能引起的凸轮相位可变机构的故障的内燃机中的可变阀系统的故障检测装置，并且能够可靠地避免麻烦由不适当的凸轮相位控制引起的。解决方案：叶片转子9可旋转地布置在同步皮带轮4的壳体6的内部，并连接到凸轮轴3的前端。凸轮轴3的相位通过向叶片转子9施加油压而改变根据OCV 30的切换，当叶片转子90处于最大延迟角度位置时，通过油压切换锁定销16以固定叶片转子9.当锁定销16的切换未被检测到油压传感器41，虽然叶片转子9被切换到最延迟的角度位置，但是被确定为故障，并且禁止了凸轮轴3的相位控制。版权所有（C）2005，JPO＆NCIPI

5. 发明专利

JP2000080947A CYLINDER INJECTION TYPE INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JP2000080947A
公开(公告)日：2000-03-21
申请号：JP25296698
申请日：1998-09-07
申请人： MITSUBISHI MOTORS CORP
发明人： HIGUCHI YOSHIAKI , DOUGAHARA TAKASHI , YAMAMOTO SHIGEO , IWACHIDO KINICHI
IPC分类号： F01N13/10 , F01N3/20 , F01N3/22 , F01N3/30 , F01N3/36 , F02D41/02 , F02D41/06 , F02D41/34 , F01N7/10
摘要： PROBLEM TO BE SOLVED: To realize early boosting of a temperature for a catalyst by securing the sufficient quantity of auxiliary injection performed in an expansion stroke and surely supplying fuel by the auxiliary injection for combustion. SOLUTION: In a cylinder injection type internal combustion engine of, when the boosting of an exhaust temperature is requested (S12), main injection is performed for main combustion by two-stage injecting means in either a suction or compression stroke, and auxiliary injection is performed in an expansion stroke (S14). In this case, air (secondary air) is simultaneously supplied into an exhaust passage by an air supplying means (S16).

6. 发明专利

JPH11117786A EXHAUST EMISSION CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH11117786A
公开(公告)日：1999-04-27
申请号：JP28492797
申请日：1997-10-17
申请人： MITSUBISHI MOTORS CORP
发明人： DOUGAHARA TAKASHI , HIGUCHI YOSHIAKI , NAKAI HIDEO
IPC分类号： F02P5/15 , F01N3/08 , F01N3/20 , F01N3/24 , F02B75/22 , F02D41/02 , F02D41/04 , F02D41/34
摘要： PROBLEM TO BE SOLVED: To regenerate a NOx catalyst efficiently by individually controlling an operation of each cylinder group when a deterioration of the NOx catalyst is detected, and releasing sulfur component adsorbed on the NOx catalyst, in a device formed in such a constitution that the NOx catalyst is arranged on a downstream side of an aggregated part formed by aggregating each exhaust passage into one. SOLUTION: Exhaust passage 2L, 2R led from each bank of a V-type engine 1 are aggregated into one, and led from an aggregating part to a tail pipe. In such an exhaust system, a NOx catalyst 3 is arranged on a downstream side of the aggregating part, and upstream side catalysts 4L, 4R are arranged in the exhaust passages 2L, 2R. In this case, in a combustion control unit 6, a combustion of the V-type engine 1 is controlled when deterioration of the NOx catalyst 3 is detected in a SOx adsorption amount estimating unit 5, an exhaust air-fuel ratio is set in a rich condition. Simultaneously, an ignition timing is phase lag-controlled so as to improve a catalyst temperature. Reducing action is promoted in the NOx catalyst 3, sulfur component is released from the NOx catalyst 3, and thereby, the NOx catalyst 3 is regenerated.

7. 发明专利

JPH10153138A INNER-CYLINDER INJECTION TYPE INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH10153138A
公开(公告)日：1998-06-09
申请号：JP31094096
申请日：1996-11-21
申请人： MITSUBISHI MOTORS CORP
发明人： KODAMA YOSHIAKI , KIKUCHI SEIJI , DANNO YOSHIRO , KOGA KAZUO , HIGUCHI YOSHIAKI
IPC分类号： F01N3/20 , F01N3/24 , F02B23/10 , F02D41/02 , F02D41/06 , F02D41/34 , F02D41/40 , F02D43/00 , F02M25/07 , F02P5/15
摘要： PROBLEM TO BE SOLVED: To early activate a catalyst by surely re-burning exhaust gas without arranging an additional device under a specified operation condition such as cold starting of an engine. SOLUTION: This internal combustion engine has a fuel injection valve 8 for injecting fuel directly into a combustion chamber, an ignition device 107 for igniting fuel injected by the fuel injection valve 8, a fuel injection control means 101 for controlling fuel injection by means of the fuel injection valve 8, a catalyst device 9 for purifying exhaust gas after combustion inside the combustion chamber, and an ignition timing control means 106 for controlling ignition timing by means of the ignition device 107. In such a setup, the fuel injection control means 101 controls the fuel injection valve 8 so as to perform additional fuel injection differently from main fuel injection after a later period of an expansion process of the engine under lean combustion in the state of specified operation condition. An ignition timing in respect to the main fuel injection is retarded by the ignition timing control means 106 at the time of additional fuel injection.

8. 发明专利

JP2000161150A FAILURE DIAGNOSTIC DEVICE FOR EVAPORATION PURGING SYSTEM 失效
公开(公告)号：JP2000161150A
公开(公告)日：2000-06-13
申请号：JP34149698
申请日：1998-12-01
申请人： MITSUBISHI MOTORS CORP
发明人： HIGUCHI YOSHIAKI , KUME TAKEO , MATSUMOTO TAKUYA , KANAO HIDETSUGU , SAKAGAMI TOMONOBU
IPC分类号： F02M25/08 , G01M3/26 , G01M15/00 , G01M15/04
摘要： PROBLEM TO BE SOLVED: To accurately and surely determine failure without determination errors even in case causing only trace amounts of leak. SOLUTION: This failure diagnostic device detects pressure within a route from a fuel tank 1 to an intake passage 6 by means of a pressure detection means 10 as the inside of the route is kept at a predetermined internal pressure by a route internal pressure changing means and closed. The residual amount of fuel in the fuel tank 1 is detected by a fuel residual amount detection means 9 and fuel temperature in the fuel tank 1 is detected by a temperature detection means 20. The pressure detected by the pressure detection means 10 or a criterion for failure diagnosis is corrected by the correction means of an ECU 11 according to detection information transmitted from the fuel residual amount detection means 9 and the temperature detection means 20. The determination means of the ECU 11 determines the failure of an evaporation purging system by comparing the corrected detection pressure corrected by the correction means with the criterion for failure diagnosis or by comparing the corrected failure diagnosis criterion corrected by the correction means with the detected pressure.

9. 发明专利

JPH11107741A EXHAUST EMISSION CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH11107741A
公开(公告)日：1999-04-20
申请号：JP26885497
申请日：1997-10-01
申请人： MITSUBISHI MOTORS CORP
发明人： HIGUCHI YOSHIAKI , DOUGAHARA TAKASHI , TAMURA YASUKI
IPC分类号： G01N27/409 , B01D53/94 , F01N3/08 , F01N3/20 , F01N3/24 , F01N11/00 , F02D41/04 , G01N27/26
摘要： PROBLEM TO BE SOLVED: To precisely estimate adsorbability of a NOx catalyst with ease so as to improve an exhaust gas characteristic by arranging an O2 sensors on each of the upstream and downstream of the NOx catalyst in an exhaust passage and detecting a degraded condition of the NOx catalyst on the basis of outputs from the respective O2 sensors. SOLUTION: O2 sensors 6, 7 are arranged in the upstream and downstream sides of a NOx catalyst 4 in an exhaust passage 2. During operation of an engine, a rich spike mode is started by means of a combustion control unit 9, and it is determined whether activation of the NOx catalyst 4 is in operation or not, while measurement of a continuous time of the rich spike mode is started. Then, outputs from the O2 sensors 6, 7 are read, and it is determined the outputs are equal to each other or not. If it is YES, the continuous time of the rich spike mode is read. Then, for example, a difference between the continuous time at that, time and the time required for activation for the first time is found, and when this time difference exceeds a threshold value, combustion control complying with the degradation of the NOx catalyst 4 is carried out.

10. 发明专利

JP2000320389A THERMOSTAT FAILURE DIAGNOSTIC DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JP2000320389A
公开(公告)日：2000-11-21
申请号：JP13123299
申请日：1999-05-12
申请人： MITSUBISHI MOTORS CORP
发明人： HIGUCHI YOSHIAKI , KUME TAKEO , MATSUMOTO TAKUYA , KANAO HIDETSUGU , SAKAGAMI TOMONOBU
IPC分类号： F02D45/00 , F01P11/16 , F02D41/22
摘要： PROBLEM TO BE SOLVED: To provide a thermostat failure diagnostic device for internal combus tion engines that can efficiently diagnose failures in thermostats, while preventing errors in diagnosis. SOLUTION: After the start-up of an engine 1, the thermostat failure diagnostic device detects failures in a thermostat 22 from the time the cooling water temperature upstream of the thermostat 22 takes to rise by a preset degree or to a preset temperature, as long as a parameter value correlating with the intake air amount or fuel injection quantity of the engine 1 remains not less than a preset value and the cooling water temperature in general is practically equal to the intake air or outside air temperature. A thermostat failure diagnosis is thus performed, for appreciable reasonableness, not under small engine- generation heat quantity or high cooling water temperature conditions, when errors in diagnosis are liable to occur, but under relatively large engine- generating heat quantity conditions, which are immune to the errors in diagnosis.

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