Motor vehicle heating system and method for pre-heating liquid fuel

A technology for heating systems and motor vehicles, applied in the field of preheating liquid fuels, can solve problems such as increasing and decreasing viscosity, achieve the effects of effective heat transfer, increase sealing force, and avoid unintentional opening

Inactive Publication Date: 2008-05-21
WEBASTO AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, preheating is beneficial for combustion as it advantageously increases the enthalpy of the fuel and reduces its viscosity

Method used

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  • Motor vehicle heating system and method for pre-heating liquid fuel
  • Motor vehicle heating system and method for pre-heating liquid fuel
  • Motor vehicle heating system and method for pre-heating liquid fuel

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Embodiment Construction

[0022] FIG. 1 is a schematic block diagram of one embodiment of the motor vehicle heating system of the present invention. This system 10 is operable, for example, for substantially supplemental heating, or for providing heating in stationary situations (when the vehicle is parked). The illustrated heating system 10 includes a piston fuel pump 16 for pumping liquid fuel from a fuel tank 12 to a burner and heat exchanger unit 14 . Depending on whether air or water is being heated, the burner and heat exchanger 14 may communicate with air and water lines (not shown) in a manner well known to those skilled in the art. The burner and heat exchanger 14 also has a fuel valve 84 that can throttle or shut off the fuel supply. It is not necessary for the fuel valve 84 to be integrated in the burner and heat exchanger 14 ; instead, it may be arranged between the piston fuel pump 14 and the burner and heat exchanger 14 . The heating system shown in FIG. 1 does not have a separate heati...

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PUM

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Abstract

The invention relates to a motor vehicle heating system (10) which is embodied in such a way as to be operated by liquid fuel, and comprises a fuel pump (16) and an electromagnetically actuated fuel valve (84; 200) which is arranged downstream from the fuel pump. According to the invention, the electromagnetically actuated fuel valve (84; 200) is embodied in such a way as to pre-heat fuel. The invention also relates to a method for pre-heating liquid fuel for a motor vehicle heating system, whereby the waste heat of an electromagnetically actuated fuel valve (84; 200) is used to pre-heat the fuel.

Description

technical field [0001] The invention relates to a motor vehicle heating system designed to operate with liquid fuel, the system comprising a fuel pump and an electromagnetically actuated fuel valve arranged downstream of the fuel pump. [0002] The invention also relates to a method of preheating liquid fuel for a motor vehicle heating system. Background technique [0003] It is already known to integrate electric heating modules in the fuel supply, which heat the fuel, into motor vehicle heating systems. It is also known to arrange electromagnetically actuated fuel valves, in particular non-return valves or shut-off valves, between the fuel pump and the burner and heat exchanger unit. [0004] The heating modules used according to the prior art have a high energy consumption, for example 40 watts, and therefore they are not used in practice during the entire combustion phase of vehicle heating, but only during the start-up phase. However, preheating is beneficial for comb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60H1/22F16K31/06F23D11/44
Inventor V·施密特B·伯梅H·米特
Owner WEBASTO AG
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