公开(公告)号：US07073479B2

公开(公告)日：2006-07-11

申请号：US11200533

申请日：2005-08-09

申请人： Bernd Köhler ,  Michael Oechsle ,  Oliver Platzek

发明人： Bernd Köhler ,  Michael Oechsle ,  Oliver Platzek

IPC分类号： F02B1/10

CPC分类号： F02D41/403 ,  F02D41/0255 ,  F02D41/3023 ,  F02D41/401 ,  F02D41/402 ,  F02D41/405 ,  F02D2041/389 ,  F02D2200/0804 ,  Y02T10/26 ,  Y02T10/44

摘要： In a method of operating an internal combustion engine with direct fuel injection such that, in the engine startup period, a three-way catalytic converter disposed in the engine exhaust system is rapidly heated to a working temperature, in that a fuel quantity which is injected is injected in two separate injection steps with the first fuel volume being injected during the intake stroke and the second fuel volume being injected during the expansion stroke so as to form immediately before the ignition instant a rich stratified charge cloud in the region of the spark plug thereby ensuring reliable ignition of the stratified cloud while, overall, achieving a lean fuel/air mix in the combustion chamber.

公开(公告)号：US20060000440A1

公开(公告)日：2006-01-05

申请号：US11200533

申请日：2005-08-09

申请人： Bernd Kohler ,  Michael Oechsle ,  Oliver Platzek

发明人： Bernd Kohler ,  Michael Oechsle ,  Oliver Platzek

IPC分类号： F02B17/00 ,  F02B3/00

CPC分类号： F02D41/403 ,  F02D41/0255 ,  F02D41/3023 ,  F02D41/401 ,  F02D41/402 ,  F02D41/405 ,  F02D2041/389 ,  F02D2200/0804 ,  Y02T10/26 ,  Y02T10/44

摘要： In a method of operating an internal combustion engine with direct fuel injection such that, in the engine startup period, a three-way catalytic converter disposed in the engine exhaust system is rapidly heated to a working temperature, in that a fuel quantity which is injected is injected in two separate injection steps with the first fuel volume being injected during the intake stroke and the second fuel volume being injected during the expansion stroke so as to form immediately before the ignition instant a rich stratified charge cloud in the region of the spark plug thereby ensuring reliable ignition of the stratified cloud while, overall, achieving a lean fuel/air mix in the combustion chamber.

摘要翻译： 在使用直接燃料喷射的内燃机的运转方法中，在发动机启动期间，设置在发动机排气系统中的三元催化转化器被快速加热到工作温度，即注入的燃料量 在两个单独的注射步骤中注入，在进气冲程期间喷射第一燃料体积，并且在膨胀冲程期间喷射第二燃料体积，以便在点火时刻之前形成火花塞区域内的富分层电荷云 从而确保分层云的可靠点燃，同时总体上在燃烧室中实现贫燃料/空气混合。