专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

31. 发明授权

US08261534B2 Exhaust gas purifying apparatus for internal combustion engine 失效
标题翻译：内燃机用废气净化装置
公开(公告)号：US08261534B2
公开(公告)日：2012-09-11
申请号：US12599537
申请日：2008-04-28
申请人： Keisuke Sano , Takaaki Itou , Kimikazu Yoda , Kazuhiro Wakao
发明人： Keisuke Sano , Takaaki Itou , Kimikazu Yoda , Kazuhiro Wakao
IPC分类号： F01N11/00 , F01N3/10 , F01N9/00 , F02D41/00
CPC分类号： F01N11/007 , F01N3/0238 , F01N3/0835 , F01N3/0842 , F01N3/0864 , F01N3/0878 , F01N3/0885 , F01N3/2013 , F01N13/009 , F01N13/0093 , F01N13/0097 , F01N2290/06 , F01N2560/025 , F02D41/0275 , F02D41/065 , F02D41/1439 , F02D41/1454 , Y02T10/26 , Y02T10/47
摘要： A main exhaust passage 42 and a first bypass passage 46 bypassing the main exhaust passage 42 are provided. An absorbent 52 having a function of absorbing HC components and NOx components contained in exhaust gas is provided in the first bypass passage 46. An underfloor catalyst 56 including a catalyst with an electric heater (EHC) 58 is provided in a main exhaust passage 42 on a downstream side of a downstream connecting portion 48b in a first bypass passage 46. A second bypass passage 62 that provides communication between the main exhaust passage 42 downstream of the underfloor catalyst 56 and the first bypass passage 46 upstream of the absorbent 52 is provided. A first exhaust switching valve 50 is provided in an upstream connecting portion 48a, and a second exhaust switching valve 68 is provided in a main exhaust passage side connecting portion 64a. A pump 66 is provided in the middle of the second bypass passage 62.
摘要翻译：主排气通道42和旁通主排气通道42的第一旁通通道46设置。具有吸收废气中的HC成分和NOx成分的功能的吸收剂52设置在第一旁路通路46中。具有电加热器（EHC）58的催化剂的地板下催化剂56设置在主排气通路42中，在第一旁路通路46中的下游连接部分48b的下游侧。提供了在底板催化剂56下游的主排气通道42和吸收剂52上游的第一旁通通道46之间提供连通的第二旁通通道62。第一排气切换阀50设置在上游连接部48a中，第二排气切换阀68设置在主排气通路侧连接部64a中。泵66设置在第二旁通通道62的中间。

32. 发明授权

US06409973B1 Exhaust gas purification device for an engine 失效
标题翻译：发动机废气净化装置
公开(公告)号：US06409973B1
公开(公告)日：2002-06-25
申请号：US08523455
申请日：1995-09-05
申请人： Yukio Kinugasa , Toshifumi Takaoka , Kouhei Igarashi , Takaaki Itou
发明人： Yukio Kinugasa , Toshifumi Takaoka , Kouhei Igarashi , Takaaki Itou
IPC分类号： B01D5314
CPC分类号： B01D53/9481 , B01D53/9495 , F01N3/0842 , F01N3/0871 , F01N3/0878 , F01N3/22 , F01N13/011 , F01N2270/00 , F01N2410/12 , F01N2610/03 , F01N2610/04 , F02B1/04
摘要： The exhaust gas purification device according to the present invention utilizes two NOx absorbents in order to remove NOx from the exhaust gas of an engine operated at a lean air-fuel ratio. The NOx absorbents are disposed, in series, in the exhaust passage of the engine and a nozzle for supplying a reducing agent is disposed in the exhaust passage at a position between the two NOx absorbents. Further, the device includes switching valves for changing the direction of the exhaust gas flow in the exhaust gas passage. When the switching valves are set to direct the exhaust gas flow to one direction, the exhaust gas first flows through one of the NOx absorbents (first NOx absorbent), and after passing through the first NOx absorbent, the reducing agent is supplied to the exhaust gas before it flows into the other NOx absorbent (second NOx absorbent). Thus, the first NOx absorbent absorbs NOx in the exhaust gas, and the NOx absorbed by the second NOabsorbent is released from the second NOx absorbent. When the switching valves are switched, the exhaust gas flows in the opposite direction, and flows through the second NOx absorbent and the first NOx absorbent in this order. In this case, the second NOx absorbent absorbs NOx in the exhaust gas, and the NOx absorbed by the first NOx absorbent is released and reduced to N2. Therefore, by reversing the direction of the exhaust gas periodically, the absorbing operation of NOx and releasing/reducing operation of NOx are performed by two NOx absorbents alternately. Thus, it becomes possible to remove NOx in the exhaust gas continuously while the NOx absorbents are prevented from being saturated by the absorbed NOx.
摘要翻译：根据本发明的排气净化装置利用两个NOx吸收剂来从以稀空燃比运转的发动机的废气中除去NOx。 NOx吸收剂串联设置在发动机的排气通道中，并且用于供给还原剂的喷嘴设置在排气通道中的两个NOx吸收剂之间的位置。此外，该装置包括用于改变排气通道中的排气流的方向的切换阀。当切换阀被设定为将废气流引导到一个方向时，废气首先流过NOx吸收剂之一（第一NOx吸收剂），并且在通过第一NOx吸收剂之后，还原剂被供给到排气气体在其流入另一个NOx吸收剂（第二NOx吸收剂）之前。因此，第一NOx吸收剂吸收废气中的NOx，并且由第二NO吸收剂吸收的NOx从第二NOx吸收剂释放。当切换阀切换时，排气沿相反方向流动，并且依次流过第二NOx吸收剂和第一NOx吸收剂。在这种情况下，第二NOx吸收剂吸收废气中的NOx，并且由第一NOx吸收剂吸收的NOx被释放并且还原成N2。因此，通过周期性地反转排气的方向，NOx的吸收运转和NOx的释放/还原运转由两个NOx吸收剂交替进行。因此，可以连续地除去排气中的NOx，同时防止NOx吸收剂被吸收的NOx饱和。

33. 发明授权

US06345496B1 Method and device for purifying exhaust gas of an engine 有权
标题翻译：用于净化发动机废气的方法和装置
公开(公告)号：US06345496B1
公开(公告)日：2002-02-12
申请号：US09502127
申请日：2000-02-10
申请人： Naohide Fuwa , Hiroshi Tanaka , Yukio Kinugasa , Takaaki Itou , Naoto Suzuki , Takehisa Yaegashi , Kouhei Igarashi , Kouichi Takeuchi
发明人： Naohide Fuwa , Hiroshi Tanaka , Yukio Kinugasa , Takaaki Itou , Naoto Suzuki , Takehisa Yaegashi , Kouhei Igarashi , Kouichi Takeuchi
IPC分类号： F01N300
CPC分类号： F02D41/1475 , B01D53/8696 , B01D53/9409 , B01D53/9422 , B01D53/9431 , B01D53/9445 , B01D53/9454 , B01D53/9477 , B01D53/9495 , B01D2255/102 , B01D2255/20761 , B01D2255/50 , B01D2255/911 , F01N3/0842 , F01N3/0871 , F01N3/20 , F01N3/2053 , F01N9/00 , F01N13/009 , F01N13/011 , F01N13/107 , F01N2240/25 , F01N2250/12 , F01N2570/18 , F01N2610/02 , F01N2610/03 , F02B1/04 , F02D41/027 , F02D41/0275 , F02D41/1443 , Y02T10/22 , Y02T10/24 , Y02T10/47
摘要： An exhaust manifold (7) of an engine (1) is connected to a three way (TW) catalyst (8a), and the TW catalyst (8a) is connected to an NH3 adsorbing and oxidizing (NH3-AO) catalyst (10a). The engine (1) performs the lean and the rich engine operations alternately and repeatedly. When the engine (1) performs the rich operation and thereby the exhaust gas air-fuel ratio of the exhaust gas flowing into the TW catalyst (8a) is made rich, NOx in the inflowing exhaust gas is converted to NH3 in the TW catalyst (8a). The NH3 is then adsorbed in the NH3-AO catalyst (10a). Next, when the engine (1) performs the lean operation and thereby the exhaust gas air-fuel ratio of the exhaust gas flowing into the TW catalyst (8a) is made lean, NOx in the exhausted gas passes through the TW catalyst (8a), and flows into the NH3-AO catalyst (10a). At this time, NH3 adsorbed in the catalyst (10a) is desorbed therefrom, and reduces the inflowing NOx.
摘要翻译：发动机（1）的排气歧管（7）与三通（TW）催化剂（8a）连接，TW催化剂（8a）与NH3吸附和氧化（NH3-AO）催化剂（10a）连接，。发动机（1）交替地重复执行精益和丰富的发动机操作。当发动机（1）进行浓作操作，使流入TW催化剂（8a）的废气的排气空燃比变浓时，在TW催化剂中将流入废气中的NOx转化成NH 3 8a）。然后将NH 3吸附在NH3-AO催化剂（10a）中。接下来，当发动机（1）进行稀薄运转，从而将流入TW催化剂（8a）的废气的排气空燃比变为稀薄时，排出气体中的NOx通过TW催化剂（8a）并流入NH3-AO催化剂（10a）。此时，吸附在催化剂（10a）中的NH 3被脱附，并且减少了流入的NOx。

34. 发明授权

US06289672B1 Exhaust gas purification device for an internal combustion engine 有权
标题翻译：内燃机用废气净化装置
公开(公告)号：US06289672B1
公开(公告)日：2001-09-18
申请号：US09346710
申请日：1999-07-02
申请人： Kenji Katoh , Takaaki Itou , Toshio Tanahashi , Hiroshi Tanaka , Naoto Suzuki , Yukio Kinugasa
发明人： Kenji Katoh , Takaaki Itou , Toshio Tanahashi , Hiroshi Tanaka , Naoto Suzuki , Yukio Kinugasa
IPC分类号： F01N300
CPC分类号： F02D41/1462 , F01N3/0814 , F01N3/0842 , F01N13/009 , F01N13/011 , F01N13/107 , F01N2430/06 , F02D41/027 , F02D41/0275 , F02D41/1443 , F02D41/1456 , F02D41/1465 , F02D41/1498 , F02D41/3029 , F02D41/307 , F02D41/405 , F02D2011/102 , F02D2200/0806 , F02D2200/1015 , F02D2200/602 , Y02T10/44
摘要： An NOx occluding and reducing catalyst is disposed in an exhaust gas passage of an internal combustion engine that operates at a lean air-fuel ratio. When the engine is operating at a lean air-fuel ratio, the NOx occluding and reducing catalyst absorbs NOx in the exhaust gas. To release NOx, the engine is operated at a rich air-fuel ratio so that the exhaust gas flowing into the NOx occluding and reducing catalyst acquires a rich air-fuel ratio. While the engine is operated in a region of moderate lean air-fuel ratios of from the stoichiometric air-fuel ratio to an air-fuel ratio of about 20 at the time when the engine operating air-fuel ratio is changing from a lean air-fuel ratio operation to a rich air-fuel ratio operation, an electronic control unit (ECU) of the engine injects secondary fuel, that does not contribute to combustion, into the cylinders of the engine through the direct cylinder fuel injection valves in the expansion stroke or the exhaust stroke of the cylinders, so that the exhaust gas flowing into the NOx occluding and reducing catalyst acquires a rich air-fuel ratio. This prevents unpurified NOx from flowing out of the NOx occluding and reducing catalyst at the time when the engine operating air-fuel ratio is changed.
摘要翻译： NOx吸收还原催化剂设置在以稀空燃比运转的内燃机的排气通路中。当发动机以稀薄的空燃比运转时，NOx吸留还原催化剂吸收废气中的NOx。为了释放NOx，发动机以丰富的空燃比运转，使得流入NOx吸留还原催化剂的废气获得浓空燃比。虽然发动机在发动机工作空燃比从稀薄空气燃料比变化时在从理论空燃比相对于大约20的空燃比的中等稀薄空燃比的区域中运行，燃料比操作到丰富的空燃比操作，发动机的电子控制单元（ECU）通过膨胀冲程中的直接气缸燃料喷射阀向发动机的气缸中喷射不助于燃烧的二次燃料或气缸的排气冲程，使得流入NOx吸留还原催化剂的废气获得浓空燃比。这防止了在发动机运转空燃比变化时未净化的NOx从NOx吸留还原催化剂流出。

35. 发明授权

US6119452A Device for purifying exhaust gas of internal combustion engine 失效
标题翻译：内燃机废气净化装置
公开(公告)号：US6119452A
公开(公告)日：2000-09-19
申请号：US68684
申请日：1998-05-13
申请人： Yukio Kinugasa , Kouhei Igarashi , Takaaki Itou , Naoto Suzuki , Takehisa Yaegashi , Toshiaki Tanaka , Naoto Miyoshi
发明人： Yukio Kinugasa , Kouhei Igarashi , Takaaki Itou , Naoto Suzuki , Takehisa Yaegashi , Toshiaki Tanaka , Naoto Miyoshi
IPC分类号： B01D53/86 , B01D53/94 , F01N3/08 , F01N3/20 , F01N13/02 , F01N13/04 , F02B1/04 , F02D41/02 , F02D41/14 , F01N3/00
CPC分类号： F01N3/2073 , B01D53/8696 , B01D53/9431 , B01D53/9454 , B01D53/9495 , F01N13/009 , F01N13/011 , F01N3/0842 , F01N3/0871 , F01N3/20 , F01N3/2053 , F02D41/027 , F02D41/1443 , F02D41/1475 , F01N2240/25 , F01N2250/12 , F01N2610/02 , F02B1/04 , F02D41/0275 , Y02T10/22
摘要： A three-way catalyst (8a) is connected to a first cylinder group 1a. The exhaust gas of the first cylinder group (1a), which has passed through the three-way catalyst (8a), and the exhaust gas of a second cylinder group (1b) are introduced to an exhaust gas purifying catalyst (14). The second cylinder group (1b) performs the lean operation. The first cylinder group (1a) performs the rich operation to synthesize NH.sub.3 from NO.sub.X in the exhaust gas of the first cylinder group (1a) in the three-way catalyst (8a). In the exhaust gas purifying catalyst (14), NO.sub.X in the exhaust gas of the second cylinder group 1b is purified by NH.sub.3 from the three-way catalyst (8a). The amount of HC flowing to the three-way catalyst (8a) is obtained. When the HC amount exceeds a predetermined amount, the first cylinder group 1a must perform the lean operation temporarily, to thereby maintain the excellent catalytic activity of the three-way catalyst (8a).
摘要翻译： PCT No.PCT / JP96 / 03288 Sec。 371日期1998年5月13日 102（e）日期1998年5月13日PCT 1996年11月8日PCT PCT。公开号WO97 / 19261 日期1997年5月29日将三元催化剂（8a）连接到第一气缸组1a。已经通过三元催化剂（8a）的第一气缸组（1a）的排气和第二气缸组（1b）的排气被引入废气净化催化剂（14）。第二气缸组（1b）执行精馏操作。第一气缸组（1a）在三元催化剂（8a）中进行第一气缸组（1a）的排气中的NO x的富NH操作。在排气净化催化剂（14）中，第三气缸组1b的废气中的NO x从三元催化剂（8a）中被NH 3净化。获得流向三元催化剂（8a）的HC量。当HC量超过预定量时，第一气缸组1a必须暂时进行稀薄运转，从而保持三元催化剂（8a）的极好的催化活性。

36. 发明授权

US5816214A Emission control system for an automobile 失效
标题翻译：汽车排放控制系统
公开(公告)号：US5816214A
公开(公告)日：1998-10-06
申请号：US622372
申请日：1996-03-27
申请人： Yukio Kinugasa , Toru Kidokoro , Takaaki Itou
发明人： Yukio Kinugasa , Toru Kidokoro , Takaaki Itou
IPC分类号： F02M33/00 , B08B15/00 , F02F7/00 , F02M25/00 , F02M35/024 , F02M35/10
CPC分类号： B08B15/00 , F02M25/00 , F02F7/006 , F05C2225/08
摘要： The emission control system of the present invention removes the small amounts of polluting gases released from various parts of the automobile. These polluting gases are released from, for example, fuel oozing out from connections of the pipes in the fuel system, lubricating oil oozing out from engine body, and solvents and adhesives remaining in the interior and exterior parts of the automobile. In the emission control system of the present invention, collectors and suction pipes are provided. The collectors are disposed at the parts of the automobile from where the polluting gases are released in such a manner that the collectors enclose these parts. The suction pipes connect the respective collectors to an intake nose of an air cleaner disposed in an intake air passage of the engine. Therefore, the polluting gases released from various parts of the automobile are drawn into the engine through the respective suction pipes before they diffuse into the atmosphere, and are burned in the engine. Thus, according to the present invention, the polluting gases released from various parts of the automobile are prevented from diffusing into the atmosphere.
摘要翻译：本发明的排放控制系统除去从汽车各部分释放的少量污染气体。这些污染气体例如从燃料系统中的管道的连接处渗出的燃料，从发动机主体渗出的润滑油以及残留在汽车的内部和外部的溶剂和粘合剂释放出来。在本发明的排放控制系统中，设置有收集器和抽吸管。收集器被布置在汽车的部分处，其中污染气体被释放，使得收集器围绕这些部件。抽吸管将各个收集器连接到设置在发动机的进气通道中的空气滤清器的进气口。因此，从汽车各部分释放的污染气体在扩散到大气中之前通过各个吸入管被吸入发动机，并在发动机中燃烧。因此，根据本发明，防止从汽车的各个部分释放的污染气体扩散到大气中。

37. 发明授权

US5783160A Method for purifying combustion exhaust gas 失效
标题翻译：燃烧废气净化方法
公开(公告)号：US5783160A
公开(公告)日：1998-07-21
申请号：US590714
申请日：1996-01-24
申请人： Yukio Kinugasa , Kouhei Igarashi , Takaaki Itou , Toshifumi Takaoka , Michihiro Ohashi , Koji Yokota
发明人： Yukio Kinugasa , Kouhei Igarashi , Takaaki Itou , Toshifumi Takaoka , Michihiro Ohashi , Koji Yokota
IPC分类号： B01D53/94 , F01N3/08 , F01N3/20 , F01N3/22 , F01N13/02 , B01D53/58
CPC分类号： B01D53/9481 , B01D53/9409 , B01D53/9436 , B01D53/9495 , F01N13/009 , F01N3/0842 , F01N3/0871 , F01N3/206 , F01N3/22 , F01N3/222 , F01N2230/04 , F01N2240/25 , F01N2250/12 , F01N2610/02 , Y02T10/22
摘要： The method for purifying combustion exhaust gas according to the present invention utilizes a NH.sub.3 decomposing catalyst. The NH.sub.3 decomposing catalyst in the present invention is capable of converting substantially all of the NH.sub.3 in the combustion exhaust gas to N.sub.2 when the air-fuel ratio of the exhaust gas is lean and the temperature of the catalyst is within a predetermined optimum temperature range. Further, when the exhaust gas contains NO.sub.x in addition to NH.sub.3, the NH.sub.3 decomposing catalyst is capable of reducing the NO.sub.x in the optimum temperature range even though the air-fuel ratio of the exhaust gas is lean. In the present invention, the conditions of the exhaust gas containing NO.sub.x are adjusted before it is fed to the NH.sub.3 decomposing catalyst in such a manner that the temperature of the exhaust gas is within the optimum temperature range and the air-fuel ratio of the exhaust gas is lean. Further, NH.sub.3 is added to the exhaust gas before it is fed to the NH.sub.3 decomposing catalyst. Therefore, a lean air-fuel ratio exhaust gas, at a temperature within the optimum temperature range, which contains both the NO.sub.x and NH.sub.3 is fed to the NH.sub.3 decomposing catalyst, and the NO.sub.x, as well as the NH.sub.3, in the exhaust gas is completely resolved by the NH.sub.3 decomposing catalyst.
摘要翻译：根据本发明的用于净化燃烧废气的方法利用NH 3分解催化剂。本发明中的NH 3分解催化剂能够在排气的空燃比稀薄且催化剂的温度在预定的最佳温度范围内时将燃烧废气中的NH 3基本上全部转化成N2。此外，当排气中含有除NH 3之外的NOx时，NH 3分解催化剂即使在排气的空燃比较稀的情况下也能够将NOx还原到最佳温度范围。在本发明中，在将废气的温度设定在最佳温度范围内并排气的空燃比的方式调节含有NOx的废气的条件，然后送入NH 3分解催化剂气体很瘦此外，在将其输入到NH 3分解催化剂之前，将NH 3加入到废气中。因此，在含有NOx和NH 3的最佳温度范围内的温度下，贫空燃比废气被供给到NH 3分解催化剂中，排气中的NOx以及NH 3是完全由NH3分解催化剂分解。

38. 发明授权

US5722374A Fuel storing device for an automobile 失效
标题翻译：汽车燃油储存装置
公开(公告)号：US5722374A
公开(公告)日：1998-03-03
申请号：US751380
申请日：1996-11-19
申请人： Toru Kidokoro , Takaaki Itou , Yoshihiko Hyodo , Yukio Kinugasa
发明人： Toru Kidokoro , Takaaki Itou , Yoshihiko Hyodo , Yukio Kinugasa
IPC分类号： B60K15/03 , B60K15/035 , B60K15/077 , F02B77/00 , F02M37/00 , F02M37/04 , F02M25/08
CPC分类号： B60K15/035 , B60K15/03177 , B60K2015/03118 , B60K2015/03138 , B60K2015/03144 , B60K2015/03151 , B60K2015/03236 , F02M37/0082 , F02M37/0094
摘要： A fuel storing device for an automobile comprises a flexible separator means disposed in a fuel storage container for separating the inside of the fuel storage container into a fuel storage portion and a space portion and a fuel vapor preventing means for preventing fuel vapor from gathering in a space between a surface of fuel and said separator means. The fuel vapor preventing means introduces fuel vapor which appears over a surface of liquid fuel into a vapor draining pipe.
摘要翻译：一种用于汽车的燃料储存装置，包括设置在燃料储存容器中的柔性分离器装置，用于将燃料储存容器的内部分离成燃料储存部分和空间部分，以及用于防止燃料蒸气聚集在燃料储存容器在燃料表面和所述分离装置之间的空间。燃料蒸汽防止装置将出现在液体燃料表面上的燃料蒸气引入蒸汽排放管中。

39. 发明授权

US5461857A Engine exhaust gas purification device 失效
标题翻译：发动机废气净化装置
公开(公告)号：US5461857A
公开(公告)日：1995-10-31
申请号：US259751
申请日：1994-06-10
申请人： Takaaki Itou , Hiroshi Tanaka , Keiso Takeda , Hidemi Ohnaka , Kazuhisa Kunitake , Toshio Tanahashi
发明人： Takaaki Itou , Hiroshi Tanaka , Keiso Takeda , Hidemi Ohnaka , Kazuhisa Kunitake , Toshio Tanahashi
IPC分类号： B01D53/94 , F01N3/08 , F01N3/20 , F01N3/22 , F01N3/24 , F01N13/02 , F02D41/02 , F02D41/04 , F02D41/14 , F02D43/00 , F02P5/15
CPC分类号： F01N3/222 , F01N13/009 , F01N3/0842 , F01N3/0871 , F01N3/22 , F02D41/0275 , F01N2240/18 , F01N2250/12 , F01N2330/02 , F01N2570/12 , F01N3/20 , Y02T10/22
摘要： An exhaust gas purification device comprising a three way catalyst, an oxidizing catalyst and a NOx absorbent which are arranged in this order in the exhaust passage. A rich air-fuel mixture is burned in the combustion chamber, and the exhaust gas discharged from the engine is initially introduced into the three way catalyst. Secondary air is fed into the exhaust passage between the three way catalyst and the oxidizing catalyst so that the air-fuel ratio of the exhaust gas flowing into the oxidizing catalyst and the NOx absorbent becomes lean.
摘要翻译：一种废气净化装置，其包括在排气通道中依次排列的三元催化剂，氧化催化剂和NOx吸收剂。在燃烧室中燃烧浓气体混合物，并且首先将从发动机排出的废气引入三元催化剂。二次空气被供给到三元催化剂和氧化催化剂之间的排气通道中，使得流入氧化催化剂和NOx吸收剂的废气的空燃比变得稀薄。

40. 发明授权

US4506644A Exhaust gas-purifying device of an internal combustion engine 失效
标题翻译：内燃机的排气净化装置
公开(公告)号：US4506644A
公开(公告)日：1985-03-26
申请号：US455798
申请日：1983-01-05
申请人： Takashi Katou , Takaaki Itou
发明人： Takashi Katou , Takaaki Itou
IPC分类号： F02M7/17 , F02M7/24 , F02M9/06
CPC分类号： F02M7/24 , F02M7/17 , Y02T10/22 , Y10S261/56
摘要： An engine comprising a variable venturi-type carburetor which has a raised wall formed on the inner wall of the intake passage thereof. The suction piston of the carburetor has a tip face having a V-shaped cross-sectional upstream end portion which cooperates with the raised wall for defining an approximately isosceles triangle-shaped airflow-restricting opening therebetween when the amount of air flowing within the intake passage is small. An electromagnetic valve is arranged in an air-bleed passage of the carburetor and is periodically opened at a fixed frequency of 1 to 2 Hz so that the air-fuel ratio fluctuates at a fixed frequency within the range of .+-.0.2 A/F unit through a .+-.1.0 A/F unit relative to an approximately stoichiometric air-fuel ratio.
摘要翻译：包括可变文丘里型化油器的发动机，其具有形成在其进气通道的内壁上的升高的壁。化油器的吸入活塞具有具有V形横截面上游端部的顶面，该顶面与凸起壁配合，用于在进气通道内流动的空气量之间限定大致等腰三角形的气流限制开口是小。一个电磁阀布置在化油器的排气通道中，并以1至2Hz的固定频率周期性地打开，使得空燃比在+/- 0.2A / F的范围内以固定频率波动单位相对于大约化学计量的空燃比通过+/- 1.0A / F单位。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式