公开(公告)号：US20140069085A1

公开(公告)日：2014-03-13

申请号：US14115136

申请日：2011-05-02

Applicant: VOLVO TECHNOLOGY CORPORATION

Inventor： Christer Alm

IPC: F02M25/07 ,  F01N3/20

CPC classification number: F02M26/35 ,  F01N3/20 ,  F02B29/0406 ,  F02D9/04 ,  F02D41/005 ,  F02D41/0055 ,  F02D41/0245 ,  F02D41/1447 ,  F02D41/16 ,  F02D2200/0414 ,  F02D2400/11 ,  F02M26/05 ,  F02M26/07 ,  F02M26/10 ,  F02M26/47 ,  Y02T10/26 ,  Y02T10/47 ,  Y10T29/49233

Abstract: A method and internal combustion engine system are provided for keeping an exhaust gas aftertreatment system within its working temperature range during an idle or motoring engine operation mode of an internal combustion engine. The method includes sensing the temperature of the gas at the gas intake side of the internal combustion engine and/or of the exhaust gas; determining whether or not the sensed temperature value is in a predetermined temperature interval or below a predetermined temperature threshold; determining whether the internal combustion engine is in idle or motoring engine operation mode; in case the internal combustion engine is determined to be in an idle or motoring engine operation mode, controlling the temperature of the gas at the gas intake side of the internal combustion engine to be within the predetermined temperature range or below the predetermined temperature threshold by recirculating exhaust gas through a connecting duct by controlling at least one valve.

Abstract translation: 提供一种方法和内燃机系统，用于在内燃机的空转或发动机运转模式期间将排气后处理系统保持在其工作温度范围内。 该方法包括检测内燃机和/或废气的进气侧的气体的温度; 确定所感测的温度值是否处于预定温度区间或低于预定温度阈值; 确定内燃机是否处于怠速或发动机运转模式; 在内燃机被确定为怠速发动机或发动机运转模式的情况下，通过再循环将内燃机的进气侧的气体的温度控制在预定温度范围内或低于预定温度阈值 通过控制至少一个阀，通过连接管道排出废气。