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    • 1. 发明申请
    • NOX DISCHARGE QUANTITY ESTIMATION METHOD FOR INTERNAL COMBUSTION ENGINE
    • 用于内燃机的NOX排放量估算方法
    • WO2005045219A1
    • 2005-05-19
    • PCT/JP2004/015545
    • 2004-10-14
    • TOYOTA JIDOSHA KABUSHIKI KAISHAMIYAKE, TeruhikoNAKAYAMA, Shigeki
    • MIYAKE, TeruhikoNAKAYAMA, Shigeki
    • F02D35/00
    • F02D41/0052F02B3/06F02B2275/14F02D41/1454F02D41/1462F02D41/1465F02M26/05F02M26/21F02M26/23F02M26/46F02M26/47Y02T10/123Y02T10/47
    • In an NO x discharge quantity estimation method for an internal combustion engine equipped with an EGR apparatus, the gas components (e.g., oxygen molecules and NO x ) of intake gas taken into a combustion chamber are assumed to be uniformly distributed throughout the entire region of the combustion chamber. Under such assumption, the combustion chamber is divided into a combustion region (region B) and a non-combustion region (region A) by making use of the ratio of the "mass of oxygen consumed as a result of combustion" to the "total mass of oxygen taken in the combustion chamber." Further, under the assumption that NO x generated as a result of combustion remains in the region B after combustion, and NO x present in the region A before combustion due to circulation of EGR gas is conserved after combustion, the quantity of NO x discharged from the exhaust passage to the outside is calculated in consideration of not only the quantity of combustion-generated NO x in the region B but also the quantity of circulated NO x in the region A.
    • 在配备有EGR装置的内燃机的NOx排出量推定方法中,假设吸入燃烧室的进气的气体成分(例如氧分子和NOx)在燃烧的整个区域均匀分布 室。 在这种假设下,通过利用“作为燃烧结果消耗的氧的质量”与“总燃烧区域”(区域A)的总和,将燃烧室分为燃烧区域(区域B)和非燃烧区域(区域A) 在燃烧室中摄取的氧气质量“。 此外,假设由于燃烧后的区域B中产生的NOx残留在燃烧后的区域B中,并且在燃烧后由于EGR气体的循环而在燃烧之前存在的区域A中的NOx被保存,则从排气通路排出的NOx的量 考虑到不仅区域B中的燃烧产生的NOx的量,而且考虑区域A中的循环的NOx的量来计算外部。