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发明授权
CN101652558B 发动机用EGR装置 失效 - 权利终止

发动机用EGR装置
摘要：
本发明的目的为提供一种作为不需要EGR冷却器等的冷却结构的发动机用EGR装置。进而，其课题为提供一种发动机用EGR装置为了与近年的排气限制相对应，在运转区域的整个区域内使在排气气体中包含的NOX降低。本发明提供一种发动机用EGR装置(30)，其中，具备：连通发动机(1)的排气歧管(4)与吸气歧管(3)的EGR管(14)、控制上述EGR管(14)的通路面积的EGR阀(9)、控制上述EGR阀(9)的ECU(6)，设有将上述EGR阀(9)旁通的旁通通路(24)，并且在上述旁通通路(24)设有节流阀(25)。
摘要（英）：

To provide an EGR device for an engine in which a cooling structure such as an EGR cooler is not required and NOx contained in the exhaust gas in all operation ranges can be so reduced as to meet the requirements under recent exhaust gas regulation. An EGR device (30) for an engine comprises an EGR pipe (14) for communicating an exhaust manifold (4) of an engine (1) with an intake manifold (3), an EGR valve (9) for controlling the passage area of the EGR pipe (14), and an ECU (6) for controlling the EGR valve (9). The EGR device (30) further comprises a bypass passage (24) for bypassing the EGR valve (9), and a throttle (25) is installed in the bypass passage (24).

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