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    • 75. 发明专利
    • Method of recirculation of exhaust gas to intake port of internal combustion engine, and engine using same
    • 废气排放到内燃机端口的方法和使用其的发动机
    • JP2009047166A
    • 2009-03-05
    • JP2008207716
    • 2008-08-12
    • Ifpイエフペ
    • GATELLIER BERTRANDSOLERI DOMINIQUEWALTER BRUNO
    • F02M25/07F02D9/02F02D13/02
    • F02M35/10104F02M26/24F02M26/37F02M35/10222F02M35/10288F02M35/1085Y02T10/14
    • PROBLEM TO BE SOLVED: To attain improvement of combustion, prevention of contamination of a heat exchanger and the like in an internal combustion engine re-circulating exhaust gas. SOLUTION: In a method for re-circulating exhaust gas to the intake port of an internal combustion engine, part of exhaust gas existing in a combustion chamber 60 of a cylinder 10 of the engine is sent to a first fluid circulation circuit C1 in an engine operation range and remaining part of the gas is discharged to an exhaust gas circuit 24 during engine exhaust stroke. Exhaust gas sent to the first fluid circulation circuit C1 is cooled during engine intake stroke. The cooled and re-circulated exhaust gas is mixed with fresh air AF supplied from an air supply circuit of the engine, mixture of the re-circulated exhaust gas and the fresh air is sent to a second fluid circulation circuit C2, and the mixture sent into the second fluid circulation circuit C2 is cooled before the same is sent to the combustion chamber 60. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:为了改善燃烧,防止内燃机再循环废气中的热交换器等的污染。 解决方案:在将废气再循环到内燃机的进气口的方法中,存在于发动机的气缸10的燃烧室60中的废气的一部分被送到第一流体循环回路C1 在发动机运转范围内,并且在发动机排气冲程期间剩余部分气体被排放到排气回路24。 送到第一流体循环回路C1的废气在发动机进气冲程期间被冷却。 冷却再循环废气与从发动机的供气回路供给的新鲜空气AF混合,再循环废气和新鲜空气的混合物被送到第二流体循环回路C2,并将混合物送出 进入第二流体循环回路C2在被送入燃烧室60之前被冷却。(C)版权所有(C)2009,JPO&INPIT
    • 77. 发明专利
    • Exhaust turbocharged internal combustion engine
    • JP2008530439A
    • 2008-08-07
    • JP2007555471
    • 2006-01-16
    • ベール ゲーエムベーハー ウント コー カーゲー
    • アイテル ヨーヒェンルッツ ライナー
    • F02M25/07
    • F02B29/0468F02D9/04F02M26/05F02M26/06F02M26/15F02M26/24F02M26/31Y02T10/146
    • 【課題】シリンダ内において混合気が圧縮および燃焼され、その際、排ガスが生じ、排ガスがシリンダから押し出されてタービン内で減圧され、タービンに高圧排ガス再循環路または低圧排ガス再循環路が装備され、腐食の恐れが低減された排気ターボ過給機付き内燃機関を提供する。
      【解決手段】排気ターボ過給機付き内燃機関において、少なくとも1つのシリンダを具備し、前記シリンダ内において、特に圧縮機(10)によって予圧縮された混合気が圧縮および燃焼され、そのとき排ガスが生じ、前記排ガスがシリンダから押し出されてタービン(19)内で減圧され、その際、シリンダから押し出された排ガスの一部が、タービン(19)内で減圧される前または減圧された後に高圧再循環路または低圧再循環路を介して再循環され、前記再循環路に排ガス冷却機構が装備されており、前記冷却機構に1つまたは少なくとも2つの冷却回路が含まれ、前記冷却回路が熱交換器ブロック(26,27)の中に延設されており、前記熱交換器ブロックが排ガスの流れ方向に前後に接続されている。 排ガスの流れ方向の最も下流の位置に設けられた熱交換器ブロック(27)が直立設置されており、その結果、前記熱交換器ブロック(27)の中を重力の作用線に対して平行にまたはほぼ平行に下方から上方にまたは上方から下方に排ガスが貫流し、さらに熱交換器ブロックの下端に凝縮水回収機構および/または凝縮水排出機構が備えられている。
      【選択図】図1
    • 78. 发明专利
    • Egr system of internal combustion engine
    • 内燃机EGR系统
    • JP2008175131A
    • 2008-07-31
    • JP2007009272
    • 2007-01-18
    • Toyota Motor Corpトヨタ自動車株式会社
    • MURATA HIROKINAGAE MASAHIROSHIMIZU HAJIMENAKAYAMA SHIGEKIONISHI TOMOMI
    • F02M25/07
    • F02D41/0065F02B29/0406F02D9/04F02D41/0007F02M26/05F02M26/06F02M26/15F02M26/24Y02T10/47
    • PROBLEM TO BE SOLVED: To suppress the deterioration of exhaust emission during the transition in which the operating conditions of an internal combustion engine are changed in the internal combustion engine having an EGR system for performing EGR by using both a high-pressure EGR means and a low-pressure EGR means. SOLUTION: This EGR system comprises a high-pressure EGR device for returning the exhaust on the upstream side of a turbine to the suction pipe on the downstream side of a compressor and recirculating it into the internal combustion engine and a low-pressure EGR device for returning the exhaust on the downstream side of the turbine to the suction pipe on the upstream side of the compressor and recirculating it into the internal combustion engine. During the stationary operation of the internal combustion engine, EGR is performed by mixing a high-pressure EGR gas with a low-pressure EGR gas at the mixing ratio at which the ratio of high-pressure EGR gas is higher than in the case of the existing mixing ratio. During the transition of the acceleration of the internal combustion engine, the opening of the high-pressure EGR valve is set to the opening Oht2 by closing it more than the target opening Ohsfc2 in the accelerated operating conditions. The total EGR gas amount is suppressed from getting excessive in a response delay period Δt23 in which the low-pressure EGR gas amount is not sufficiently reduced. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:为了抑制在具有EGR系统的内燃机中内燃机的运转状态发生变化的过渡期间,通过使用高压EGR 装置和低压EGR装置。 解决方案:该EGR系统包括高压EGR装置,用于将涡轮上游侧的排气返回到压缩机下游侧的吸入管并将其再循环到内燃机中,并将低压 EGR装置,用于将涡轮机下游侧的排气返回到压缩机的上游侧的吸入管,并将其再循环到内燃机中。 在内燃机的静止运转中,通过将高压EGR气体与低压EGR气体混合,以高压EGR气体的比例高于 现有混合比。 在内燃机的加速过渡期间,通过在加速运转条件下将其高于目标开度Ohsfc2,将高压EGR阀的开度设定为开度Oht2。 在不能充分降低低压EGR气体量的响应延迟期间Δt23中,抑制总EGR气体量的过剩。 版权所有(C)2008,JPO&INPIT
    • 79. 发明专利
    • Exhaust gas recirculation device for internal combustion engine
    • 用于内燃机的排气回收装置
    • JP2008008205A
    • 2008-01-17
    • JP2006179768
    • 2006-06-29
    • Toyota Motor Corpトヨタ自動車株式会社
    • NAGAE MASAHIROSHIMIZU HAJIMEMURATA HIROKI
    • F02D21/08F01N3/02F02D23/00F02M25/07
    • F01N13/0097F01N3/0235F01N3/2006F02B3/06F02B29/0406F02B37/00F02D9/04F02D41/0007F02D41/0055F02D41/024F02D41/029F02D2041/0017F02M26/05F02M26/06F02M26/10F02M26/15F02M26/24F02M26/28F02M26/38Y02T10/144Y02T10/47
    • PROBLEM TO BE SOLVED: To provide a technique capable of performing both control of the opening of an exhaust gas throttle vale and control of EGR (exhaust gas recirculation) through a low pressure EGR passage while ensuring the degree of freedom of both controls in an exhaust gas recirculation device for an internal combustion engine having the low pressure EGR passage. SOLUTION: In this exhaust gas recirculation device provided with a turbocharger 5 with a turbine 5b arranged in an exhaust pipe 4 and a compressor 5a arranged in an intake pipe 3, the low pressure EGR passage 31 connecting the exhaust pipe 4 arranged further downstream from the turbine 5b and the intake pipe 3 arranged further upstream from the compressor 5a, and a filter 13 arranged in the exhaust pipe 4 arranged further downstream from the turbine 5b, the exhaust gas throttle valve 19 is arranged in the exhaust pipe 4 arranged further downstream from the filter 13 and arranged further upstream from the connection part of the low pressure EGR passage 31. Pressure in the low pressure EGR passage 31 is not excessively raised even when controlling the exhaust gas throttle valve 19 in a valve closing direction during regeneration of the filter 13, therefore, control accuracy of the low pressure EGR valve 32 can be ensured, and low pressure EGR can be performed suitably. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:为了提供一种能够通过低压EGR通道同时进行排气节流阀的打开控制和EGR(废气再循环)的控制同时确保两个控制的自由度的技术 在具有低压EGR通路的内燃机的废气再循环装置中。 解决方案:在具有布置在排气管4中的涡轮5b和布置在进气管3中的压缩机5a的涡轮增压器5的排气再循环装置中,连接排气管4的低压EGR通路31 在涡轮5b的下游以及设置在压缩机5a的更上游的进气管3以及布置在排气管4的下游的涡轮5b的排气管4的排气管节流阀19配置在排气管4的内部 在过滤器13的下游,并且进一步配置在低压EGR通路31的连接部的上游侧。即使在再生期间控制排气节气门19处于关闭方向,低压EGR通路31中的压力也不会过度上升 因此,可以确保低压EGR阀32的控制精度,并且可以适当地执行低压EGR。 版权所有(C)2008,JPO&INPIT