阅读说明：本技术 机动车内燃机操作方法和颗粒过滤器在机动车排气设备中的布置 (Method for operating an internal combustion engine of a motor vehicle and arrangement of a particle filter in an exhaust system of a motor vehicle ) 是由 J·施瓦布 P·兰泽拉特 于 2018-06-12 设计创作，主要内容包括：本发明涉及一种机动车内燃机操作方法,其中内燃机排气被供给机动车的颗粒过滤器。在机动车滑行模式中,当颗粒过滤器内的排气温度高于预定的温度阈值时,阻止对内燃机的燃料供应的暂时中断,直到达到该颗粒过滤器的预定的过滤率(14)。本发明还涉及一种颗粒过滤器在机动车排气设备中的布置。(The invention relates to a method for operating an internal combustion engine of a motor vehicle, wherein exhaust gas of the internal combustion engine is supplied to a particle filter of the motor vehicle. In a coasting mode of the motor vehicle, when the temperature of the exhaust gas in the particulate filter is above a predetermined temperature threshold, a temporary interruption of the fuel supply to the internal combustion engine is prevented until a predetermined filtration rate (14) of the particulate filter is reached. The invention also relates to an arrangement of a particle filter in an exhaust system of a motor vehicle.)

1. A method of operating an internal combustion engine of a motor vehicle, in which exhaust gases of the internal combustion engine are supplied to a particle filter of the motor vehicle, characterized in that, in a coasting mode of the motor vehicle, a temporary interruption of the fuel supply to the internal combustion engine is prevented when the temperature of the exhaust gases in the particle filter is above a predetermined temperature threshold value until a predetermined filtration rate (14) of the particle filter is reached.

2. A method according to claim 1, characterized in that the interruption of the fuel supply is prevented in that the internal combustion engine is operated with an overfire air ratio in the presence of an air deficit or with a stoichiometric overfire air ratio.

3. A method according to claim 1 or 2, characterized in that a value of at least 475 ℃ is used as the predetermined temperature threshold.

4. A method according to any one of claims 1 to 3, characterized in that a value of at least 500 ℃ is used as the predetermined temperature threshold.

5. A method according to any one of claims 1 to 4, characterized in that a filtration rate (14) of at least 90% based on the number of particles is used as the predetermined filtration rate (14) of the particle filter.

6. A method according to any one of claims 1 to 5, characterized in that the filtration rate (14) is determined in dependence on the loading of the particle filter with ash and soot.

7. A method according to claim 6, characterised in that the filtration rate (14) is derived from the determined loading of ash and soot by the particulate filter and from the filtration rate (14) determined for the respective particulate filter, for example on a test bed, from the loading of ash and soot.

8. The method as claimed in claim 6, wherein the pressure difference and the exhaust gas volume flow over the particle filter are taken into account for determining the soot loading of the particle filter.

9. A method according to one of claims 1 to 7, characterized in that a filter having a filter rate (14) of about 70% based on the number of particles in the new state is used as particle filter.

10. An arrangement of a particle filter in an exhaust system of a motor vehicle, wherein the particle filter can receive exhaust gases of an internal combustion engine of the motor vehicle, characterized in that the arrangement comprises a control device which is designed to: in a coasting mode of the motor vehicle, a temporary interruption of the fuel supply to the internal combustion engine is prevented when the exhaust gas temperature in the particulate filter is above a predetermined temperature threshold value until a predetermined filtration rate (14) of the particulate filter is reached.