# US 2008/0185210 A1 · Motor Vehicle

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- Number: US 2008/0185210 A1
- Document ID: US20080185210A1
- Status: Published application
- Kind: A1
- Application number: 12/027,547
- Filed: 2008-02-07
- Published: 2008-08-07
- Earliest claimed: 2007-02-07
- Assignees: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
- Inventors: Uwe Seidler
- Web page: https://patentgrep.com/patent/US20080185210A1

## CPC

- B60K 13/04: concerning exhaust
- B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES

## Abstract

A motor vehicle has a heat-radiating first component, in particular an exhaust system, and a temperature-sensitive second component disposed adjacently to the heat-radiating first component. At least one heat protection element is disposed between the two components and defines or separates a hot space lying between the first component and the heat protection element from a cold space lying between the second component and the heat protection element. A ventilation device is provided, which, at least when the motor vehicle is being driven, conducts cooling air for cooling the temperature-sensitive second component into the cold space and consequently ensures a constant air exchange in the cold space.

## Claims

### Claim 1

A motor vehicle, comprising:
a heat-radiating first component;
a temperature-sensitive second component disposed adjacently to said heat-radiating first component;
at least one heat protection element disposed between said first and second components and separating a hot space lying between said first component and said heat protection element from a cold space lying between said second component and said heat protection element; and
a ventilation device, at least when the motor vehicle is being driven, said ventilation device conducting cooling air for cooling said temperature-sensitive second component into said cold space.

### Claim 2 (depends on 1)

The motor vehicle according to claim 1, further comprising a further heat protection element disposed adjacently to said temperature-sensitive second component and separates said second component from said cold space.

### Claim 3 (depends on 2)

The motor vehicle according to claim 2, wherein at least one of said heat protection element and said further heat protection element is configured as an air conduction element and guides an air stream conveyed by said ventilation device into said cold space.

### Claim 4 (depends on 2)

The motor vehicle according to claim 2, wherein at least one of said heat protection element and said further heat protection element is formed from metal.

### Claim 5 (depends on 1)

The motor vehicle according to claim 1, wherein said ventilation device has a gap-shaped air inlet and a closed duct, adjoining said gap-shaped air inlet, for air routing.

### Claim 6 (depends on 5)

The motor vehicle according to claim 5,
further comprising an underbody trim part; and
wherein said gap-shaped air inlet is disposed in said underbody trim part of the motor vehicle.

### Claim 7 (depends on 5)

The motor vehicle according to claim 5, wherein said closed duct issues into said cold space.

### Claim 8 (depends on 5)

The motor vehicle according to claim 5, further comprising a further air conduction element disposed downstream of said closed duct and is configured to deliver cooling air to said cold space.

### Claim 9 (depends on 1)

The motor vehicle according to claim 1, wherein said temperature-sensitive second component is a transmission.

### Claim 10 (depends on 1)

The motor vehicle according to claim 1, wherein said heat-radiating first component is an exhaust system.

### Claim 11 (depends on 2)

The motor vehicle according to claim 2, wherein at least one of said heat protection element and said further heat protection element is formed from sheet metal.

### Claim 12 (depends on 5)

The motor vehicle according to claim 5, wherein said closed duct has an outlet port disposed upstream of said cold space and is configured for delivering the cooling air to said cold space.

### Claim 13 (depends on 1)

The motor vehicle according to claim 1, wherein said temperature-sensitive second component is a front axle transmission.