Exhaust gas aftertreatment device for diesel engines of vehicles, preferably passenger cars

Abstract

An exhaust gas after treatment device for a diesel engine of a vehicle has at least one injection valve with an injection nozzle through which an exhaust gas treatment medium is injected into an exhaust pipe. At least one pump is provided that conveys the exhaust gas treatment medium to the at least one injection valve. At least one sensor and at least one control are also provided. The pump, the sensor, and the injection valve are connected to the at least one control. The at least one pump and the at least one control are combined to an assembly, and the assembly also includes the at least one injection valve.

1 .- 20 . (canceled)  
   
   
       21 . An exhaust gas after treatment device for a diesel engine of a vehicle, the device comprising: 
 at least one injection valve with an injection nozzle through which an exhaust gas after treatment medium is injected into an exhaust pipe;    at least one pump conveying the exhaust gas treatment medium to the at least one injection valve;    at least one sensor;    at least one control;    wherein the at least one pump, the at least one sensor, and the at least one injection valve are connected to the at least one control;    wherein the at least one pump and the at least one control are combined to an assembly;    wherein the assembly comprises the at least one injection valve.    
   
   
       22 . The device according to  claim 21 , wherein the at least one injection valve comprises a check valve that opens in a direction toward the injection nozzle.  
   
   
       23 . The device according to  claim 22 , further comprising a throttle location arranged downstream of the check valve.  
   
   
       24 . The device according to  claim 21 , wherein at least one of the at least one pump, the at least one sensor, and the at least one injection valve are connected electrically to the at least one control inside the assembly.  
   
   
       25 . The device according to  claim 21 , wherein the at least one control has a connector for an onboard electric system of a vehicle.  
   
   
       26 . The device according to  claim 21 , further comprising a control valve arranged upstream of the at least one injection valve.  
   
   
       27 . The device according to  claim 26 , wherein the control valve is arranged in a housing.  
   
   
       28 . The device according to  claim 27 , wherein the housing is a part of the assembly and the at least one pump is arranged in the housing.  
   
   
       29 . The device according to  claim 27 , wherein the at least one sensor is arranged in the housing.  
   
   
       30 . The device according to  claim 29 , wherein the at least one sensor is a pressure sensor.  
   
   
       31 . The device according to  claim 27 , wherein the at least one control is connected to the housing.  
   
   
       32 . The device according to  claim 27 , further comprising at least one additional sensor arranged outside of the housing, wherein the at least one control has a connector for the at least one additional sensor.  
   
   
       33 . The device according to  claim 32 , wherein the at least one additional sensor is a temperature sensor.  
   
   
       34 . The device according to  claim 32 , wherein the at least one additional sensor is arranged external to the assembly.  
   
   
       35 . The device according to  claim 27 , wherein the at least one injection valve is connected by an expansion hose to the housing.  
   
   
       36 . The device according to  claim 35 , wherein the expansion hose is heatable.  
   
   
       37 . The device according to  claim 27 , wherein the housing is mounted on a diesel fuel tank of the vehicle.  
   
   
       38 . The device according to  claim 21 , wherein the assembly is part of a metering device.  
   
   
       39 . The device according to  claim 37 , wherein the metering device and the assembly form a mounting module.