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1. 发明专利

JPH11229889A INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH11229889A
公开(公告)日：1999-08-24
申请号：JP3521298
申请日：1998-02-17
申请人： MITSUBISHI AUTO ENG , MITSUBISHI MOTORS CORP
发明人： KANEKO KATSUNORI , ANDO HIROMITSU , IWAMOTO HIROHIKO , KUME TAKEO , OMORI SHOGO , SATO HIRONOBU , FUJIMOTO MASAHIRO , OOHASHI TOMOHIRO , MUSHIGAMI HIROSHI , MORITA TOSHINORI , KAWASHIMA KAZUHITO , KUMAGAI HIROSHI
IPC分类号： F02B75/06 , F02B75/18 , F02B75/20 , F16F15/24 , F16F15/26
摘要： PROBLEM TO BE SOLVED: To aim at improving both engine performance and quiteness while maintaining constant displacement. SOLUTION: An engine is provided with cylinders 2a, 2b for actual combustion and a cylinder 4 for torque balance rather than combustion. Each capacity of the cylinders 2a, 2b is expanded since the bore of the cylinder 4 for torque balance is reduced. As a result, combustion efficiency and gas pressure torque of those cylinders 2a, 2b can be improved. During running of the engine 1, only air cycling is executed within the cylinder 4. The expansion pressure torque of the compressed air produces maximum torque substantially equal to that of those cylinders 2a, 2b. Even when the number of cylinders for combustion is reduced to two, the resultant torque balance characteristics can be substantially the same level as that of the 3-cylinder engine.

2. 发明专利

JP2007285305A Diesel engine 有权
标题翻译：柴油发动机
公开(公告)号：JP2007285305A
公开(公告)日：2007-11-01
申请号：JP2007203982
申请日：2007-08-06
申请人： Mitsubishi Motors Corp , 三菱自動車工業株式会社
发明人： SHIGAHARA MEGUMI , HATAKE MICHIHIRO , MORITA TOSHINORI , KOGA TOKUYUKI , YANAGAWA YUJI
IPC分类号： F02D41/04 , F01N3/24 , F02D21/08 , F02D43/00 , F02D45/00
CPC分类号： Y02T10/144 , Y02T10/47
摘要： PROBLEM TO BE SOLVED: To provide a diesel engine wherein reduction of both smoke and NOx can be attained in addition to inhibitions of increase in THC and oil-dilution in a first control mode, an driver's output request is accepted in a second control mode, and a transitory smoke-increase is avoided in a control-mode-switching time. SOLUTION: In the second control mode (normal mode), the output is ensured by setting an ignition timing close to a compression top-dead-center; in the first control mode (low NOx mode), the ignition timing is advanced substantially further than that in the second control mode to raise the upper limit of smoke-suppressible EGR rate, and 36° BTDC is set where an THC increase and an oil-dilution attributable to an excessive advance angle can be prevented; and in switching the control mode, the transitory smoke-increase is prevented by instant switchover of the ignition timing at the excess air-ratio of 1.3. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种柴油发动机，其中除了在第一控制模式中抑制THC和油稀释之外，还可以实现烟和NOx的还原，所以在第二控制模式中接受驾驶员的输出请求控制模式，并且在控制模式切换时间中避免了暂时增加烟雾。
解决方案：在第二控制模式（正常模式）下，通过将点火正时设置为接近压缩上止点来确保输出; 在第一控制模式（低NOx模式）中，点火正时比第二控制模式进一步提高，以提高烟雾抑制率的上限，并且在THC增加的情况下设定36°BTDC和油可以防止归因于过大提前角的稀释; 并且在切换控制模式时，通过在过量空气比为1.3的瞬时切换点火正时来防止暂时增加烟雾。版权所有（C）2008，JPO＆INPIT

3. 发明专利

JP2003138970A DIESEL ENGINE 有权
公开(公告)号：JP2003138970A
公开(公告)日：2003-05-14
申请号：JP2001339518
申请日：2001-11-05
申请人： MITSUBISHI MOTORS CORP
发明人： SHIGAHARA MEGUMI , HATAKE MICHIHIRO , MORITA TOSHINORI , KOGA TOKUYUKI , YANAGAWA YUJI
IPC分类号： F02M25/07 , F01N3/08 , F01N3/24 , F01N3/28 , F02D21/08 , F02D41/02 , F02D41/04 , F02D43/00
摘要： PROBLEM TO BE SOLVED: To provide a diesel engine capable of emitting and reducing NOx from an NOx storage catalyst without increasing the smoke emission quantity by increasing the upper limit value of the EGR rate for controlling the emission of smoke. SOLUTION: The NOx purge combustion mode, when the fuel injection timing IT is set at 36 deg.BTDC which is widely advanced compared with a general 10 deg.BTDC, is executed. At the fuel injection timing IT, the smoke emission quantity is controlled to a very low value even if the EGR rate Regr is increased to about 56%, while the excess air ratio of 1.0 or lower is achieved because of the large EGR, so that NOx can be emitted and reduced with the increased HC and CO.

4. 发明专利

JP2003138952A DIESEL ENGINE 审中-公开
公开(公告)号：JP2003138952A
公开(公告)日：2003-05-14
申请号：JP2001339517
申请日：2001-11-05
申请人： MITSUBISHI MOTORS CORP
发明人： SHIGAHARA MEGUMI , HATAKE MICHIHIRO , MORITA TOSHINORI , KOGA TOKUYUKI , YANAGAWA YUJI
IPC分类号： F01N3/08 , F02B1/12 , F02B3/06 , F02D9/04 , F02D21/08 , F02D23/02 , F02D41/00 , F02D41/02 , F02D41/04 , F02D41/30 , F02D41/40 , F02D43/00 , F02D45/00 , F02M25/07
摘要： PROBLEM TO BE SOLVED: To provide a diesel engine capable of making compatible the reduction of smoke with the reduction of NOx by raising the upper limit value of an EGR rate allowing the exhaustion of smoke to be suppressed. SOLUTION: A low NOx combustion mode in which a fuel injection timing IT is set to 36 deg.BTDC remarkably spark-advanced as compared with approx. general 10 deg.BTDC is executed. At the fuel injection timing IT, even if the EGR rate Regr is increased to approx. 56%, the amount of exhaustion of smoke can be suppressed to an extremely low value. Further, at the timing, both smoke and NOx can be reduced since the amount of exhaustion of NOx is also suppressed by a large amount of EGR.

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