Heating and air-conditioning system for a motor vehicle

Abstract

A heating and air-conditioning system for a motor vehicle, having at least one running-state system having a heat exchanger and a blower to supply an air flow across the heat exchanger; and a stop-state system having a heat carrier loop connected to the running-state heat exchanger, wherein coolant within the heat carrier loop can stream through the running-state heating heat exchanger. The system can include a housing having a stop-state coolant heater or cooler, a pump to move a coolant through the heat carrier loop, a controller to control the pump and the running-state blower (including the use of a temperature sensor), a power supply, which is available in a stopped state, and a blower to supply an air flow across the running-state heat exchanger. The housing can have a connection interface corresponding to running-state air ducts, whereby retroactive installation of the system is facilitated.

Description

CLAIM OF PRIORITY[0001]The present application is a continuation in part of, and claims priority to, currently pending U.S. patent application Ser. No. 10 / 571,698 filed on Nov. 29, 2006, which is a 35 USC 371 National stage entry of PCT / EP2005 / 003973 filed Apr. 15, 2005, which claims priority to German Patent Application No. 10 2004 019 607.9 filed Apr. 22, 2004; the entire contents of each are herein incorporated by reference for all purposes.FIELD OF THE INVENTION[0002]The present invention relates to a heating and air-conditioning system for the cabin of a motor vehicle, in particular a utility vehicle, that can heat and cool the cabin of a motor vehicle during both a running and stopped state (engine-on / engine-off) in a configuration that allows efficient and cost effective manufacturing and installation times, while allowing a broader range of application flexibility and in a smaller overall unit package size suitable for “after market” installations.BACKGROUND OF THE INVENTION...

AI Technical Summary

Benefits of technology

[0007]The present invention relates to a heating and air-conditioning system for the cabin of a motor vehicle, in particular a utility vehicle, that can heat and cool the cabin of a motor vehicle during a both a running and stopped state (engine-on / engine-off) in a configuration that allows efficient and cost effective manufacturing and installation times, while allowing a broader range of application flexibility and in a smaller overall unit package size suitable for “after market” installations.

[0010]Additional features can also include a blower within the housing to supply an air flow across the running-state heat exchanger are contained within a housing located in a rear region of the vehicle cabin interior. The running-state system can also have ducts and air vents to direct the flow of air across a running-state heat exchanger and into a vehicle cabin interior. The housing can have a connection interface corresponding to the running-state ducts, whereby retroactive installation of the system is facilitated.

Problems solved by technology

The disadvantages of this concept are high fuel consumption, wear and tear of the engine when the vehicle is in the stop-state (engine-idling), and additional emissions such as pollutants and noise due to the operation of the engine.

Nevertheless, the systems can be complex and expensive.

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