Engine speed-based modification of exhaust gas recirculation during fueling transients

发明授权

US06698409B1 Engine speed-based modification of exhaust gas recirculation during fueling transients 有权

标题翻译：在加油过渡期间，基于发动机速度改变废气再循环

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专利标题： Engine speed-based modification of exhaust gas recirculation during fueling transients
专利标题（中）： 在加油过渡期间，基于发动机速度改变废气再循环
申请号： US10314671

申请日： 2002-12-09
公开(公告)号： US06698409B1

公开(公告)日： 2004-03-02
发明人: Michael P. Kennedy , Michael J. McNulty , James T. Beaucaire , David V. Rodgers
申请人： Michael P. Kennedy , Michael J. McNulty , James T. Beaucaire , David V. Rodgers
主分类号： F02M2507
IPC分类号： F02M2507

Engine speed-based modification of exhaust gas recirculation during fueling transients

摘要：

Engine speed data N and engine fueling data MFDES are processed by a strategy (22) that multiplies (28) fueling transient data MFDES TRANSIENT and speed-based modifier data EGR_N_TRANS_MULT to develop speed-based fueling transient data. The speed-based fueling transient data is then processed according to a function (32) that correlates values of a fueling transient modifier with values of speed-based fueling transient data to develop exhaust gas recirculation modifier data. The exhaust gas recirculation modifier data and basic exhaust gas recirculation data are multiplied (34) to develop modified exhaust gas recirculation data, and exhaust gas is recirculated in accordance with the modified exhaust gas recirculation data. Using engine speed as a determinant of the extent to which the basic EGR rate should be modified during a fueling transient enables better control over certain exhaust emissions over certain speed ranges.

摘要（中）：

发动机速度数据N和发动机加油数据MFDES通过将（28）加油瞬态数据MFDES TRANSIENT和基于速度的修正数据EGR_N_TRANS_MULT相乘的策略（22）来处理，以开发基于速度的加油瞬态数据。然后根据功能（32）对基于速度的燃料供给瞬态数据进行处理，该功能将加油过渡调节器的值与基于速度的燃料供给瞬态数据的值相关联，以开发废气再循环修正数据。将废气再循环调节剂数据和碱性废气再循环数据相乘（34）以形成修正废气再循环数据，并根据改进的废气再循环数据再循环废气。使用发动机转速作为在加油瞬态过程中应修改基本EGR率的程度的决定因素，能够在某些速度范围内更好地控制某些废气排放。

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