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公开(公告)号:US06877464B2
公开(公告)日:2005-04-12
申请号:US10677750
申请日:2003-10-03
申请人: Mitsuo Hitomi , Kouji Sumida , Takayoshi Hayashi
发明人: Mitsuo Hitomi , Kouji Sumida , Takayoshi Hayashi
IPC分类号: F02B75/18 , F01L1/18 , F01L1/26 , F01L13/00 , F02B1/12 , F02B17/00 , F02B23/10 , F02B47/10 , F02B75/12 , F02B75/20 , F02D13/02 , F02D13/06 , F02D41/00 , F02D41/02 , F02D41/04 , F02D41/14 , F02D41/22 , F02D41/30 , F02D41/34 , F02D41/38 , F02D41/40 , F02D43/00 , F02F1/42 , F02M25/07 , F02P5/04 , F16N3/12 , F02B41/34
CPC分类号: F02M26/01 , F01L1/267 , F01L13/0005 , F01L13/0036 , F01L2800/00 , F02B1/12 , F02B17/005 , F02B23/104 , F02B47/10 , F02B75/20 , F02B2075/125 , F02B2075/1816 , F02B2275/18 , F02D13/0207 , F02D13/0276 , F02D13/06 , F02D41/0002 , F02D41/0057 , F02D41/008 , F02D41/1454 , F02D41/1475 , F02D41/187 , F02D41/3017 , F02D41/3029 , F02D41/3035 , F02D2041/0015 , F02F1/4214 , F02M26/43 , F02P5/045 , F02P5/1527 , Y02T10/123 , Y02T10/128 , Y02T10/146 , Y02T10/18 , Y02T10/42 , Y02T10/47
摘要: Intake air/exhaust gas flow control is performed in an partial load range of an engine such that burned gas which is discharged from an exhaust stroke side preceding cylinder of a pair of cylinders having an overlapping exhaust stroke and intake stroke is introduced into an intake stroke side following cylinder through an intercylinder gas channel. In an operating range set as a special operation mode, a combustion condition controller executes control such that combustion is performed in the following cylinder by means of compression ignition. In an operating condition in which knocking is likely to occur within the compression ignition range of the following cylinder, control is executed by a fuel injection controller such that the timing of fuel injection into the following cylinder is retarded relative to that of an operating condition in which knocking is unlikely to occur.
摘要翻译: 在发动机的部分负荷范围内进行进气/排气流量控制,使得从具有重叠排气冲程和进气冲程的一对气缸的排气冲程侧先前气缸排出的燃烧气体被引入进气冲程 侧后跟汽缸通过气缸内气体通道。 在作为特殊操作模式设定的工作范围内,燃烧条件控制器执行控制,使得通过压缩点火在后续气缸中进行燃烧。 在随后的气缸的压缩点火范围内可能发生爆震的操作状态下,通过燃料喷射控制器执行控制,使得燃料喷射到后一个气缸中的时间相对于下一个气缸的运行状态的时间延迟 这种敲击不大可能发生。
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公开(公告)号:US07182050B2
公开(公告)日:2007-02-27
申请号:US10472523
申请日:2003-01-31
IPC分类号: F02B41/34
CPC分类号: F02P5/045 , F01L1/185 , F01L1/267 , F01L13/0005 , F01L13/0036 , F01L2800/00 , F01L2800/06 , F02B1/12 , F02B17/005 , F02B23/104 , F02B47/10 , F02B75/20 , F02B2075/125 , F02B2075/1816 , F02B2275/18 , F02D13/0215 , F02D13/0257 , F02D13/0261 , F02D13/0265 , F02D13/06 , F02D41/0002 , F02D41/0057 , F02D41/0065 , F02D41/008 , F02D41/1454 , F02D41/1456 , F02D41/1475 , F02D41/187 , F02D41/3017 , F02D41/3029 , F02D41/3035 , F02D2013/0296 , F02D2041/0017 , F02F1/4214 , F02M26/01 , F02M26/37 , F02M26/42 , F02M26/43 , F02M26/47 , Y02T10/123 , Y02T10/18 , Y02T10/42 , Y02T10/47
摘要: The invention is intended to provide improved emission-cleaning performance by use of a three-way catalyst alone, without the need for a lean NOx catalyst, while ensuring a fuel economy improvement effect of lean burn operation. A multicylinder spark-ignition engine is constructed such that, in a pair of preceding and following cylinders whose exhaust and intake strokes overlap each other, burned gas discharged from the preceding cylinder (2A, 2D) which is currently in the exhaust stroke is introduced directly into the following cylinder (2B, 2C) which is currently in the intake stroke through an intercylinder gas channel (22) and gas discharged from only the following cylinder (2B, 2C) is led to an exhaust passage (20) provided with a three-way catalyst (24) in a low-load, low-speed operating range. Fuel supply to the individual cylinders is controlled in such a manner that combustion in the preceding cylinder (2A, 2D) is made under lean mixture conditions at an air-fuel ratio larger than the stoichiometric air-fuel ratio by a specific amount and combustion in the following cylinder (2B, 2C) is made under conditions of the stoichiometric air-fuel ratio created by supplying fuel to the burned gas introduced from the preceding cylinder (2A, 2D).
摘要翻译: 本发明旨在通过使用三元催化剂单独提供改进的排放清洁性能,而不需要贫NOx催化剂,同时确保稀燃燃烧操作的燃料经济性改善效果。 多气缸火花点火发动机构造成使得在排气和进气冲程彼此重叠的一对先前和后续气缸中,从当前处于排气行程的先前气缸(2A,2D)排出的燃烧气体是 直接通过气缸内气体通道(22)直接引入目前处于进气行程的下一个气缸(2 B,2 C),而仅从下一个气缸(2B,2C)排出的气体被引导到排气通道 20),其具有在低负载,低速操作范围内的三元催化剂(24)。 对各个气缸的燃料供给以这样的方式进行控制,使得先前气缸(2A,2D)中的燃烧在贫混合条件下以大于化学计量空燃比的空燃比制成特定量, 在后续气缸(2B,2C)中的燃烧是在通过向从先前气缸(2A,2D)引入的燃烧气体供给燃料而产生的理论空燃比的条件下制备的。
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公开(公告)号:US07219634B2
公开(公告)日:2007-05-22
申请号:US10472563
申请日:2003-01-31
申请人: Mitsuo Hitomi , Toshiaki Nishimoto , Yoshiyuki Shinya , Kouji Sumida , Takayoshi Hayashi , Noriyuki Iwata , Kouji Asanomi , Taketoshi Yamauchi , Keiji Araki
发明人: Mitsuo Hitomi , Toshiaki Nishimoto , Yoshiyuki Shinya , Kouji Sumida , Takayoshi Hayashi , Noriyuki Iwata , Kouji Asanomi , Taketoshi Yamauchi , Keiji Araki
IPC分类号: F02B41/34
CPC分类号: F02M26/01 , F01L1/185 , F01L1/267 , F01L13/0005 , F01L13/0036 , F01L2800/00 , F01L2800/06 , F02B1/12 , F02B17/005 , F02B23/104 , F02B47/10 , F02B75/20 , F02B2075/125 , F02B2075/1816 , F02B2275/18 , F02D13/0215 , F02D13/0257 , F02D13/0261 , F02D13/0265 , F02D13/06 , F02D41/0002 , F02D41/0057 , F02D41/008 , F02D41/1454 , F02D41/1456 , F02D41/1475 , F02D41/187 , F02D41/3017 , F02D41/3029 , F02D41/3035 , F02D2041/0017 , F02F1/4214 , F02M26/37 , F02M26/42 , F02M26/43 , F02P5/045 , Y02T10/12 , Y02T10/123 , Y02T10/146 , Y02T10/18 , Y02T10/42 , Y02T10/47
摘要: For the purpose of improving the fuel efficiency by lean combustion and enhancing the fuel efficiency improvement effects by performing compression ignition efficiently in some cylinders, a multi-cylinder spark ignition engine is constructed such that exhaust gas, that is exhausted from preceding cylinders 2A, 2D on the exhaust stroke side among pairs of cylinders whose exhaust stroke and intake stroke overlap in a low load, low rotational speed region, is directly introduced through an inter-cylinder gas passage 22 into following cylinders 2B, 2C on the intake stroke side and only gas exhausted from the following cylinders 2B, 2C is fed to an exhaust passage 20, which is provided with a three-way catalyst 24. Combustion controller is provided that controls the combustion of each of the cylinders such that combustion is conducted by forced ignition in a condition in which the air/fuel ratio is a lean air/fuel ratio which is larger by a prescribed amount than the stoichiometric air/fuel ratio in the preceding cylinders 2A, 2D and, in the following cylinders 2B, 2C, fuel is supplied to burnt gas of lean air/fuel ratio introduced from the preceding cylinders 2A, 2D and combustion is conducted by compression ignition.
摘要翻译: 为了通过贫燃燃烧提高燃料效率,并且通过在一些气缸中有效地进行压缩点火来提高燃料效率的改善效果,构成多缸火花点火式发动机,使得从先前气缸2A排出的废气, 在排气行程和进气行程在低负荷,低转速区域中重叠的成对汽缸之间的排气冲程侧的2D直接通过气缸内气体通道22引入进气口中的后续气缸2B,2C中 并且仅从下一个气缸2B,2C排出的气体被供给到设置有三元催化剂24的排气通道20。 提供燃烧控制器,其控制每个气缸的燃烧,使得在空气/燃料比为比空气/燃料比大于理论空燃比的规定量的条件下通过强制点火来进行燃烧, 在先前的气缸2A,D2中的燃料比,并且在随后的气缸2B,2C中,将燃料供应到从先前的气缸2A,2D引入的燃尽空气/燃料比的燃烧气体,并且燃烧由 压缩点火。
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