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    • 41. 发明授权
    • Exhaust apparatus for a V-type internal combustion engine
    • V型内燃机排气装置
    • US4731993A
    • 1988-03-22
    • US8534
    • 1987-01-29
    • Yoshiaki ItoRyuichi DeguchiHiroki MatsuokaToru Hanafusa
    • Yoshiaki ItoRyuichi DeguchiHiroki MatsuokaToru Hanafusa
    • F01N13/10B60K13/04F01N3/28F01N13/08F01N7/10
    • F01N13/08F01N3/2882F01N13/10Y02T10/22
    • An exhaust apparatus connected to a V-type internal combustion engine which is mounted in an engine compartment in a front part of a vehicle. The exhaust apparatus comprises a front exhaust manifold and a rear exhaust manifold connected to banks of the V-type engine respectively, an exhaust assembly connected to the exhaust manifolds and a catalytic converter interposed in the exhaust assembly. The wall thickness of the front exhaust manifold is made thinner than that of the rear exhaust manifold. By the thin front exhaust manifold, the heat capacity of the front exhaust path extending from the front exhaust manifold toward the catalytic converter is lessened, thereby suppressing the dropping of temperature of the exhaust gas flowing through the front exhaust path. As a result, the dropping of temperature of the exhaust gas reaching the catalytic converter is suppressed as a whole, and a catalyst in the catalytic converter is warmed up quickly to a required temperature.
    • 连接到V型内燃机的排气装置,其安装在车辆前部的发动机室中。 排气装置包括分别连接到V型发动机的组的前排气歧管和后排气歧管,连接到排气歧管的排气组件和插入排气组件中的催化转化器。 前排气歧管的壁厚比后排气歧管的壁厚薄。 通过薄的前排气歧管,从前排气歧管朝向催化转化器延伸的前排气路的热容减少,从而抑制流经前排气通路的废气的温度下降。 结果,总体上抑制到达催化转化器的废气的温度下降,并且将催化转化器中的催化剂快速升温至所需温度。
    • 49. 发明授权
    • Fuel supply control system for an engine
    • 发动机燃油供应控制系统
    • US5727537A
    • 1998-03-17
    • US548115
    • 1995-10-25
    • Norihisa NakagawaHiroki MatsuokaMichihiro Ohashi
    • Norihisa NakagawaHiroki MatsuokaMichihiro Ohashi
    • F02M25/08F02D41/00F02D41/02F02D41/04F02D41/14F02D45/00F02M23/00F02M25/00
    • F02D41/1482F02D41/0045F02D41/0042F02M25/08
    • A fuel supply control system for an engine comprises a fuel injector for feeding fuel into the engine, a canister for temporarily storing fuel vapor, and an air-fuel ratio sensor for sensing an air-fuel ratio of the engine. The canister is connected to an intake passage downstream of a throttle valve to purge a purge gas, that is, air containing fuel vapor, into the intake passage. An amount of fuel to be injected from the fuel injector is corrected in accordance with output a signals of the air-fuel ratio sensor to make the air-fuel ratio equal to a target air-fuel ratio. An initial value of a fuel vapor concentration coefficient, which represents a concentration of fuel vapor in air fed into the engine, is calculated in accordance with a deviation caused when the purging operation starts. A decrement of the fuel vapor concentration coefficient caused when the purge gas is purged by a predetermined amount is calculated using a relationship between the decrement and the fuel vapor concentration coefficient, which relationship is prepared in advance. The fuel vapor concentration coefficient is further corrected by subtracting the decrement from the initial value whenever the purge gas is purged by the predetermined amount. The amount of fuel is reduced in accordance with the fuel vapor concentration coefficient.
    • 用于发动机的燃料供给控制系统包括用于将燃料供给到发动机中的燃料喷射器,用于临时储存燃料蒸气的罐和用于感测发动机的空燃比的空燃比传感器。 罐连接到节流阀下游的进气通道,以将吹扫气体即含有燃料蒸汽的空气吹扫到进气通道中。 根据输出空燃比传感器的信号来校正从燃料喷射器喷射的燃料量,以使空燃比等于目标空燃比。 燃料蒸气浓度系数的初始值,其表示进给发动机的空气中的燃料蒸气的浓度,根据在清洗操作开始时引起的偏差来计算。 使用预先准备的关系的减量和燃料蒸气浓度系数之间的关系来计算吹扫气体被净化预定量时引起的燃料蒸气浓度系数的减少。 每当净化气体被清除预定量时,通过从初始值减去减量来进一步校正燃料蒸气浓度系数。 根据燃料蒸气浓度系数,燃料量减少。
    • 50. 发明授权
    • Fuel-vapor emission-control system for controlling the amount of flow
through a charcoal canister
    • 用于控制通过炭罐的流量的燃料蒸气排放控制系统
    • US5647332A
    • 1997-07-15
    • US601391
    • 1996-02-14
    • Yoshihiko HyodoHiroki Matsuoka
    • Yoshihiko HyodoHiroki Matsuoka
    • F02M25/08
    • F02M25/0809F02M25/0836
    • The amount of flow in a canister is controlled, in a fuel-vapor emission-control system, in response to the operating condition of an engine, control being performed of the size of a release port on the canister responsive to the amount of purge, thereby enabling a large purging amount. An electromagnetic valve capable of changing the surface area of the port is provided at the atmospheric side of a port of the canister. The degree of opening of this electromagnetic valve is varied, depending on the conditions of refueling, traveling, and parking, and during a purge, the opening of the electromagnetic valve when the amount of purge is large is made larger then when the amount of purge is small. By doing this, the recovery of hydrocarbons from the canister when purging is done is speed up, thus improving the working capacity of the canister.
    • 在燃料 - 蒸气排放控制系统中,响应于发动机的运行状态,在罐中的流量被控制,响应于吹扫量而对罐上的释放口的尺寸进行控制, 从而能够实现大的清洗量。 在罐的端口的大气侧设置能够改变端口表面积的电磁阀。 这种电磁阀的开度根据加油,行驶和停车的条件而变化,并且在吹扫期间,当吹扫量大时,电磁阀的打开被增大,然后当吹扫量 是小。 通过这样做,在进行清洗时从罐中回收碳氢化合物的加速,从而提高了罐的工作能力。