DE102020205051A1 - Internal combustion engine assembly - Google Patents

Abstract

The present invention relates to an internal combustion engine arrangement, comprising: an internal combustion engine (10), in particular for driving a motor vehicle; an exhaust gas purification device (20) for purifying exhaust gas from the internal combustion engine, which device is arranged downstream behind the internal combustion engine as seen in a flow direction from an air supply line (31) to the internal combustion engine to an exhaust gas outlet (32); an exhaust gas feed line (33) from the internal combustion engine to the exhaust gas purification device; and a gas pump (40) for drawing gas through the exhaust gas purification device, which is arranged downstream of the exhaust gas purification device as seen in the flow direction.

Description

The present invention relates to an internal combustion engine arrangement with an internal combustion engine, in particular for driving a motor vehicle, a motor vehicle, in particular a passenger car, with the internal combustion engine arrangement and a method for operating the internal combustion engine arrangement.

From the DE 10 2018 213 349 A1 a proactive heating system for a vehicle is known which is used to increase the temperature of an exhaust catalyst prior to ignition of an engine to reduce emissions, the proactive heating system being part of an exhaust system for a vehicle and comprising an electrically heated catalyst and an air pump, the be activated prior to engine ignition to increase the temperature of a three-way catalytic converter so that the three-way catalytic converter is at the desired target threshold temperature or light-off temperature prior to engine ignition, thereby eliminating the delay in exhaust gas treatment after a cold start of the engine.

If, in this exhaust system, the engine is stopped with a valve overlap or at least one cylinder with inlet and outlet valves open at the same time and the air pump is activated, this can convey undesired air back through the engine or from the outlet through the inlet valves.

One object of an embodiment of the present invention is to improve an internal combustion engine arrangement, in one embodiment its operating behavior, and in one embodiment to solve the problem explained above.

This object is achieved by an internal combustion engine arrangement having the features of claim 1. Claims 13, 14 protect a motor vehicle with an internal combustion engine arrangement described here and a method for operating an internal combustion engine arrangement described here. Advantageous embodiments of the invention are the subject of the subclaims.

According to one embodiment of the present invention, an internal combustion engine arrangement has an internal combustion engine.

In one embodiment, the internal combustion engine is a reciprocating piston engine, in particular an Otto or diesel engine. In one embodiment, it drives an at least temporarily a motor vehicle, in one embodiment a passenger vehicle, or is provided for this purpose, in particular set up or is used for this purpose. In one embodiment, the motor vehicle is a hybrid vehicle or additionally has an electric drive for driving the motor vehicle.

The present invention is particularly advantageous for this, in particular because of the thermal, structural, electrical and / or operating conditions.

According to one embodiment of the present invention, the internal combustion engine arrangement has an exhaust gas cleaning device which at least temporarily cleans exhaust gas from the internal combustion engine or is provided for this purpose, in particular is set up or used.

In one embodiment, the exhaust gas purification device has one or more (exhaust gas) catalytic converters, in particular at least one electrically heated catalytic converter and / or at least one three-way catalytic converter.

The present invention is particularly advantageous for this, in particular because of the thermal, structural and / or operating conditions.

According to one embodiment of the present invention, the exhaust gas purification device is arranged downstream behind the internal combustion engine, viewed in a flow direction from a single or multi-channel or air supply line to the internal combustion engine to a single or multi-channel or multi-channel exhaust outlet.

According to one embodiment of the present invention, the internal combustion engine arrangement has a single or multi-channel exhaust gas feed line from the internal combustion engine to the exhaust gas cleaning device.

According to one embodiment of the present invention, the internal combustion engine arrangement has a gas pump which at least temporarily sucks gas, in one embodiment air, in particular fresh air, and / or exhaust gas through the exhaust gas cleaning device or which is provided for this purpose, in particular is set up or used.

Correspondingly, according to one embodiment of the present invention for or when operating the internal combustion engine arrangement in at least one operating state with a non-fired, in one embodiment stationary or shutdown internal combustion engine, which in the present case is referred to as the first operating state without loss of generality, the gas pump sucks gas, in particular Air, through the exhaust gas purification device.

In one embodiment, gas, in particular air, can flow through the exhaust gas cleaning device even when the internal combustion engine is not fired, in particular stationary or shut down, thereby accelerating or realizing the desired warming up of the exhaust gas cleaning device, in particular before the internal combustion engine is started, and thereby improving the operating behavior will.

According to one embodiment of the present invention, it is arranged downstream behind the exhaust gas cleaning device, as seen in the flow direction explained above. In one embodiment, the exhaust gas purification device is (in terms of flow) between the internal combustion engine and this gas pump or the internal combustion engine, exhaust gas purification device and gas pump are arranged in series in this order or the flow direction from the air supply line to the exhaust gas outlet (towards). In one embodiment, the internal combustion engine arrangement has the exhaust gas outlet.

By arranging the gas pump downstream of the exhaust gas purification device or on the side of the exhaust gas purification device opposite the internal combustion engine, it can advantageously be prevented in one embodiment that the gas pump, in particular when the valve overlaps or the inlet and outlet valves are open, undesirably air through the internal combustion engine, in particular its Combustion chambers, fed back, and thereby the operating behavior can be improved.

In one embodiment, the internal combustion engine arrangement also has a single-channel or multi-channel internal combustion engine bypass line which connects the air supply line and the exhaust gas supply line or exhaust gas cleaning device. In one embodiment, the internal combustion engine and the internal combustion engine bypass line (in terms of flow and / or between the air supply line and exhaust gas supply line or exhaust gas cleaning device) are arranged in parallel.

Accordingly, in one embodiment, in or in the first operating state, the gas pump sucks gas, in particular air, through the internal combustion engine bypass line.

As a result, in one embodiment, the gas pump can suck gas, in particular air, past the internal combustion engine into and through the exhaust gas cleaning device. In one embodiment, gas, in particular air, can flow through the exhaust gas cleaning device even when the internal combustion engine is not fired, in particular stationary or shut down, thereby accelerating or realizing the desired warming up of the exhaust gas cleaning device, in particular before the internal combustion engine is started, and thereby improving the operating behavior will.

In one embodiment, the internal combustion engine arrangement furthermore has a valve through which the internal combustion engine bypass line is or can be blocked, in one embodiment temporarily or selectively or only in one (blocking) direction, or which is provided for this purpose in particular is set up or used (internal combustion engine bypass line valve).

Correspondingly, in one embodiment, the internal combustion engine bypass line valve is opened, in particular, in the first operating state.

In this way, in one embodiment, an undesired flow past the internal combustion engine, in particular back to its air supply line, can be prevented.

In one embodiment, this internal combustion engine bypass line valve is a switching or control valve, in one embodiment electrically controlled, which blocks the internal combustion engine bypass line in a controlled manner, in particular selectively blocks it or in at least one (switching or control ) Locks position and does not lock in at least one other (switching or control) position, or which is provided for this purpose, in particular set up or used.

As a result, in one embodiment, an undesired flow past the internal combustion engine, in particular back to its air supply line, can be prevented in a targeted manner or in certain operating states, for example at least temporarily when the internal combustion engine is fired.

In another embodiment, the internal combustion engine bypass line valve is a check valve which blocks the internal combustion engine bypass line in a blocking direction from the exhaust gas supply line to the air supply line, in particular automatically, or which is provided, in particular designed, for this purpose or is used.

As a result, the control effort can be reduced in one embodiment.

In one embodiment, the internal combustion engine arrangement also has a single-channel or multi-channel gas pump bypass line which connects the exhaust gas cleaning device to the exhaust gas outlet. In one embodiment, the gas pump and the gas pump bypass line (in terms of flow and / or between the exhaust gas cleaning device and the exhaust gas outlet) are arranged in parallel.

Correspondingly, in one embodiment, in at least one operating state with a fired internal combustion engine, exhaust gas flows through the gas pump bypass line.

As a result, in one embodiment, an undesired flow through the gas pump with hot exhaust gas from the internal combustion engine can be reduced and, in one embodiment, prevented.

Equally, in one embodiment, in at least one operating state with a fired internal combustion engine, exhaust gas can also flow through the gas pump.

As a result, the construction and / or control effort can be reduced in one embodiment.

In one embodiment, the internal combustion engine arrangement also has a valve through which the gas pump bypass line is or can be blocked, in one embodiment temporarily or selectively or only in one (blocking) direction, or which is provided for this purpose in particular is set up or used.

In one embodiment, this valve is a switching or control valve, in one embodiment electrically controlled, which blocks the gas pump bypass line in a controlled manner, in particular selectively blocks or blocks it in at least one (switching or control) position and in at least one another (switching or control) position does not lock, or which is provided for this purpose, in particular set up or used.

In this way, in one embodiment, an undesired flow past the gas pump can be prevented in a targeted manner or in certain operating states.

In another embodiment, the valve for blocking the gas pump bypass line is a check valve which blocks the gas pump bypass line in a blocking direction from the exhaust gas outlet to the exhaust gas cleaning device, in particular automatically, or which is provided for this purpose, in particular is set up or is being used.

As a result, the control effort can be reduced in one embodiment.

In one embodiment, the internal combustion engine arrangement also has a supply heater arranged upstream of the exhaust gas purification device, in one embodiment in the internal combustion engine bypass line, which at least temporarily heats gas to be supplied to the exhaust gas purification device or is provided for this purpose, in particular set up or used .

Additionally or alternatively, the internal combustion engine arrangement has, in one embodiment, an exhaust gas purification device heater arranged in particular in the exhaust gas purification device, which at least temporarily heats the exhaust gas purification device or is provided for this purpose, in particular set up or used. In one embodiment, the exhaust gas purification device has at least one electrically heated catalytic converter, the heater of which is thus an exhaust gas purification device heater or part of an exhaust gas purification device heater.

Correspondingly, in one embodiment, the supply heater heats the gas to be supplied to the exhaust gas purification device and / or the exhaust gas purification device heater heats the exhaust gas purification device.

As a result, in one embodiment, especially when the internal combustion engine is not fired, in particular at a standstill or shut down, a desired warming up of the exhaust gas purification device, especially before the internal combustion engine is started, can be accelerated or implemented, thereby improving the operating behavior.

In one embodiment, the internal combustion engine arrangement also has a heating / recirculation line, through which the gas sucked in by the gas pump through the exhaust gas purification device is at least temporarily returned to the supply and / or exhaust gas purification device heater or which is provided, in particular, set up for this purpose. is used.

Correspondingly, in one embodiment, the gas pump conveys gas back through the heating / recirculation line, in particular gas sucked in by the exhaust gas purification device, to the supply and / or exhaust gas purification device heater.

As a result, in one embodiment, a desired warming up of the exhaust gas purification device, in particular before the internal combustion engine is started, can be accelerated or implemented and the operating behavior can be improved as a result.

In one embodiment, the internal combustion engine arrangement furthermore has a (switching or control) valve which is electrically controlled in one embodiment and which, in one embodiment, controls, blocks, in particular selectively blocks or in at least one (switching - or control) position and does not block in at least one other (switching or control) position, or which is provided for this purpose, in particular set up or used (heating / recirculation line valve).

In one embodiment, this heating / recirculation line valve blocks, alternatively or in at least one (the) other (switching or control) position (s), a connection between the gas pump, in particular an outlet of the gas pump, and the exhaust gas outlet or is provided for this purpose, in particular set up or is used for this purpose. In one embodiment, the heating / recirculation line valve blocks the heating / recirculation line in at least one (switching or control) position, while it does not block this connection between the gas pump, in particular an outlet of the gas pump, and the exhaust gas outlet, and / or blocks this connection between the gas pump, in particular an outlet of the gas pump, and the exhaust gas outlet in at least one (other) (switching or control) position, while it does not block the heating / recirculation line, or is provided for this purpose , in particular set up or used for this purpose, so that gas is selectively conveyed back from the gas pump via this connection to the exhaust gas outlet or through the heating / recirculation line to the supply and / or exhaust gas cleaning device heater.

Correspondingly, in one embodiment, the gas pump, in at least one operating state when the internal combustion engine is not fired, conveys gas through the heating / recirculation line, in particular gas sucked through the exhaust gas cleaning device, back to the supply and / or exhaust gas cleaning device heater, the heating / recirculation line Valve does not block the heating recirculation line.

Additionally or alternatively, in one embodiment, in at least one (further) operating state with a non-fired internal combustion engine and, in particular through this heating-recirculation line valve, the heating-recirculation line is blocked, the gas pump pumps gas to the exhaust outlet, in one embodiment through or via the connection between the gas pump, in particular an outlet of the gas pump, and the exhaust gas outlet.

As a result, in one embodiment, a recirculation through the heater or a suction of gas through the internal combustion engine bypass line can optionally be carried out.

In one embodiment, the internal combustion engine arrangement furthermore has a secondary gas pump which at least temporarily conveys gas, in particular air, through the exhaust gas cleaning device or is provided for this purpose, in particular is set up or used, and (for this purpose) upstream of the exhaust gas cleaning device when viewed in the flow direction, in an embodiment in the internal combustion engine bypass line is arranged.

As a result, in one embodiment, when the internal combustion engine is fired, air can be supplied to the exhaust gas cleaning device without hot exhaust gas flowing through the gas pump.

In the present case, a gas pump and a secondary gas pump are understood to mean, in particular, a flow machine for compressible media; they can therefore each have, in particular, a compressor or a blower or fan. Thus, in the present case, for a more compact representation, in particular compressors and blowers or fans are referred to as gas or secondary gas pumps, as is customary in the art, for example, in the case of vacuum pumps.

In one embodiment, a switching valve is selective or active, in one embodiment by a drive, in particular a controlled valve drive, in particular electric and / or motor-driven, in at least two, in one embodiment in at least three, switching or control positions (switching) or controllable, in one version (also) switchable or controllable into the same switching or control position with opposing pressure gradients.

• 1 eine Brennkraftmaschinenanordnung nach einer Ausführung der vorliegenden Erfindung;
• 2 eine Brennkraftmaschinenanordnung nach einer weiteren Ausführung der vorliegenden Erfindung;
• 3 eine Brennkraftmaschinenanordnung nach einer weiteren Ausführung der vorliegenden Erfindung;
• 4 eine Brennkraftmaschinenanordnung nach einer weiteren Ausführung der vorliegenden Erfindung;
• 5A, 5B eine Brennkraftmaschinenanordnung nach einer weiteren Ausführung der vorliegenden Erfindung in verschiedenen Betriebszuständen;
• 6 eine Brennkraftmaschinenanordnung nach einer weiteren Ausführung der vorliegenden Erfindung; und
• 7 eine Brennkraftmaschinenanordnung nach einer weiteren Ausführung der vorliegenden Erfindung.

Further advantageous developments of the present invention emerge from the subclaims and the following description of preferred embodiments. This shows, partly schematically:

• 1 an internal combustion engine assembly according to an embodiment of the present invention;
• 2 an internal combustion engine assembly according to a further embodiment of the present invention;
• 3 an internal combustion engine assembly according to a further embodiment of the present invention;
• 4th an internal combustion engine assembly according to a further embodiment of the present invention;
• 5A , 5B an internal combustion engine arrangement according to a further embodiment of the present invention in various operating states;
• 6th an internal combustion engine assembly according to a further embodiment of the present invention; and
• 7th an internal combustion engine assembly according to a further embodiment of the present invention.

1 Figure 3 shows an internal combustion engine assembly according to an embodiment of the present invention.

The internal combustion engine arrangement has an internal combustion engine 10 , in the 1 simplified by a cylinder 11 with an inlet valve 12th and an exhaust valve 13th is indicated, an air supply line 31 to the internal combustion engine 10 or their inlet valve (s) 12th in which an air filter 100 as well as an airflow sensor and a throttle that are in 1 denoted together by 110, an exhaust gas purification device with one or more (exhaust gas) catalytic converters 20 for cleaning exhaust gas from the internal combustion engine, which in a flow direction from the air supply line 31 to an exhaust outlet 32 seen (from left to right in 1 ) downstream behind the internal combustion engine 10 is arranged, an exhaust gas feed line 33 from the internal combustion engine 10 to the exhaust gas purification device 20th , and a gas pump 40 for sucking in gas, in particular (fresh) air, through the exhaust gas cleaning device.

The gas pump 40 is seen in the flow direction downstream behind the exhaust gas cleaning device 20th arranged.

The internal combustion engine arrangement also has an internal combustion engine bypass line 34 on that the air supply line 31 and the exhaust pipe 33 connects and fluidically parallel to the internal combustion engine 10 is arranged.

In the internal combustion engine bypass line 34 is a switching or control valve 54 arranged for the controlled blocking of the internal combustion engine bypass line.

In an operating state when the internal combustion engine is not fired, the gas pump sucks 40 Fresh air via the internal combustion engine bypass line 34 on the internal combustion engine 10 passing through the exhaust gas cleaning device 20th . For this purpose, the switching or control valve is or will be 54 opened.

2 shows an internal combustion engine arrangement according to a further embodiment of the present invention. Features that correspond to one another are denoted by the same reference symbols, so that reference is made to the above description and only differences are discussed below.

In the execution of the 2 the internal combustion engine arrangement further has a gas pump bypass line 35 on which the emission control device 20th with the exhaust outlet 32 connects.

In the gas pump bypass line 35 is a check valve 55 for blocking the gas pump bypass line in a blocking direction from the exhaust gas outlet 32 to the exhaust gas purification device 20th arranged.

In this way, a flow through the gas pump 40 with hot exhaust gas with a fired internal combustion engine 10 be reduced or avoided by exhaust gas, at least substantially, through the gas pump bypass line 35 instead of the gas pump 40 flows.

3 shows an internal combustion engine arrangement according to a further embodiment of the present invention. Features that correspond to one another are denoted by the same reference symbols, so that reference is made to the above description and only differences are discussed below.

In the execution of the 3 blocks instead of the switching or control valve 54 a check valve 54 ' the internal combustion engine bypass line 34 in a blocking direction from the exhaust gas feed line 33 to the air supply line 31 .

In modifications that are not shown, it is also possible in the case of other embodiments shown here instead of the check valve 54 ' the switching or control valve 54 or instead of the switching or control valve 54 the check valve 54 ' in the internal combustion engine bypass line 34 be arranged.

4th shows an internal combustion engine arrangement according to a further embodiment of the present invention. Features that correspond to one another are denoted by the same reference symbols, so that reference is made to the above description and only differences are discussed below.

In the execution of the 4th is upstream of the emission control device 20th in the internal combustion engine bypass line 34 a feed heater 60 for heating from the exhaust gas purification device 20th arranged to be supplied gas, which heats the air, which is then supplied to the exhaust gas purification device or before this is supplied to the exhaust gas purification device.

Additionally or alternatively, the or at least one of the catalyst (s) 20th be an electrically heated catalyst in the exhaust gas purification device or the exhaust gas purification device an exhaust gas purification device heater 20 ' exhibit.

In modifications that are not shown, the exhaust gas purification device heater can thus be used 20 ' or the feed heater 60 in 4th omitted and / or the exhaust gas purification device heater 20 ' and / or the feed heater 60 can also be provided in other of the embodiments shown here.

5A , 5B show an internal combustion engine arrangement according to a further embodiment of the present invention in two operating states. Features that correspond to one another are denoted by the same reference symbols, so that reference is made to the above description and only differences are discussed below.

In the execution of the 5A , 5B the internal combustion engine arrangement further has a heating recirculation line 36 for returning from the gas pump 40 through the exhaust gas purification device 20th sucked gas to the supply heater 60 on.

In an in 5A The operating state shown promotes the gas pump 40 via a multi-way switching or control valve 56 (Heating recirculation line valve) Gas through the heating recirculation line 36 (Gas recirculation).

In an in 5B The further operating state shown promotes the gas pump 40 in the case of a non-fired internal combustion engine via the correspondingly switched switching or control valve 56 Gas through a connection 37 to the exhaust outlet 32 , the switching or control valve 56 now the
Heating recirculation line 36 locks.

6th shows an internal combustion engine arrangement according to a further embodiment of the present invention. Features that correspond to one another are denoted by the same reference symbols, so that reference is made to the above description and only differences are discussed below.

In the execution of the 6th is instead of the multi-way switching or control valve 56 a simple (re) controlled shut-off valve 56 '
(Heating recirculation line valve) provided.

7th shows an internal combustion engine arrangement according to a further embodiment of the present invention. Features that correspond to one another are denoted by the same reference symbols, so that reference is made to the above description and only differences are discussed below.

In the execution of the 7th the internal combustion engine arrangement further comprises a secondary gas pump 41 for conveying gas through the exhaust gas cleaning device 20th on, seen in the flow direction upstream of the exhaust gas purification device 20th in the internal combustion engine bypass line 34 is arranged.

Although exemplary embodiments have been explained in the preceding description, it should be pointed out that a large number of modifications are possible. It should also be pointed out that the exemplary designs are merely examples that are not intended to limit the scope of protection, the applications and the structure in any way. Rather, the preceding description provides a person skilled in the art with guidelines for the implementation of at least one exemplary embodiment, with various changes, in particular with regard to the function and arrangement of the described components, being able to be made without departing from the scope of protection as it emerges from the claims and these equivalent combinations of features results.

List of reference symbols

10

Internal combustion engine

11

cylinder

12th

Inlet valve

13th

outlet valve

20th

Exhaust gas cleaning device

20 '

Exhaust gas purifier heater

31

Air supply

32

Exhaust outlet

33

Exhaust pipe

34

Internal combustion engine bypass line

35

Gas pump bypass line

36

Heating recirculation line

37

Connection between gas pump and exhaust outlet

40

Gas pump

41

Secondary gas pump

54

Switching or control valve (internal combustion engine bypass line valve)

54 '

Check valve (internal combustion engine bypass line valve)

55

check valve

56

Switching or control valve (heating / recirculation line valve)

56 '

Switching or control valve (heating / recirculation line valve)

60

Feed heater

100

Air filter

110

Air flow sensor + throttle valve

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 102018213349 A1 [0002]

Claims (15)

Internal combustion engine arrangement, comprising: an internal combustion engine (10), in particular for driving a motor vehicle; an exhaust gas purification device (20) for purifying exhaust gas from the internal combustion engine, which device is arranged downstream behind the internal combustion engine as seen in a flow direction from an air supply line (31) to the internal combustion engine to an exhaust gas outlet (32); an exhaust gas feed line (33) from the internal combustion engine to the exhaust gas purification device; and a gas pump (40) for sucking gas through the exhaust gas purification device, which is arranged downstream of the exhaust gas purification device as seen in the flow direction. Internal combustion engine arrangement according to Claim 1 , further comprising an internal combustion engine bypass line (34) which connects the air supply line and the exhaust gas supply line. Internal combustion engine arrangement according to Claim 2 , further comprising an internal combustion engine bypass line valve (54; 54 ') for blocking the internal combustion engine bypass line. Internal combustion engine arrangement according to Claim 3 , wherein the internal combustion engine bypass line valve is a switching valve (54) for the controlled blocking of the internal combustion engine bypass line. Internal combustion engine arrangement according to Claim 3 wherein the internal combustion engine bypass line valve is a check valve (54 ') for blocking the internal combustion engine bypass line in a blocking direction from the exhaust gas feed line to the air feed line. Internal combustion engine arrangement according to one of the preceding claims, further comprising a gas pump bypass line (35) which connects the exhaust gas cleaning device to the exhaust gas outlet. Internal combustion engine arrangement according to Claim 6 , further comprising a valve (55), in particular a switching valve or check valve, for blocking the gas pump bypass line, in particular for controlled blocking or in a blocking direction from the exhaust gas outlet to the exhaust gas cleaning device. Internal combustion engine arrangement according to one of the preceding claims, further comprising a supply heater (60) arranged upstream of the exhaust gas purification device, in particular in the internal combustion engine bypass line, for heating gas to be supplied to the exhaust gas purification device. Internal combustion engine arrangement according to one of the preceding claims, further comprising an exhaust gas purification device heater (20 ') arranged on the exhaust gas purification device for heating the exhaust gas purification device. Internal combustion engine arrangement according to one of the two Claims 8 , 9 , further comprising a heating recirculation line (36) for returning gas drawn in by the gas pump through the exhaust gas purification device to the supply and / or exhaust gas purification device heater. Internal combustion engine arrangement according to Claim 10 , further comprising a heating / recirculation line valve (56; 56 ') for blocking the heating / recirculation line, in particular for the alternative blocking of a connection (37) between the gas pump and the exhaust gas outlet. Internal combustion engine arrangement according to one of the preceding claims, further comprising a secondary gas pump (41) for conveying gas through the exhaust gas cleaning device, which is arranged upstream of the exhaust gas cleaning device, in particular in the internal combustion engine bypass line, viewed in the flow direction. Motor vehicle, in particular passenger car, with an internal combustion engine arrangement according to one of the preceding claims for driving the motor vehicle. Method for operating an internal combustion engine arrangement according to one of the preceding claims, wherein in at least one operating state when the internal combustion engine (10) is not fired, the gas pump (40) sucks gas through the exhaust gas cleaning device (20). Method according to the preceding claim, wherein: - in this operating state - the gas pump sucks gas through the internal combustion engine bypass line (34), in particular the internal combustion engine bypass line valve (54; 54 ') is open; and / or - the supply heater (60) of the exhaust gas purification device is to be supplied with gas and / or the exhaust gas purification device heater (20 ') heats the exhaust gas purification device; and / or - the gas pump conveys gas through the heating / recirculation line (36), in particular the heating / recirculation line valve (56; 56 ') does not block the heating / recirculation line; and / or - in at least one further operating state when the internal combustion engine is not fired and the engine is locked Heating recirculation line (36), the gas pump conveys gas to the exhaust gas outlet (32); and / or - in at least one operating state with a fired internal combustion engine, exhaust gas flows through the gas pump bypass line (35) and / or the gas pump.

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