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Method and apparatus for avoiding fog formation on window glass of a vehicle

A technology for window glass and vehicles, which is applied to vehicle parts, transportation and packaging, air handling equipment, etc., and can solve problems such as unsatisfactory reliability and satisfactory performance

Inactive Publication Date: 2016-08-10
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] It has been shown that the reliability of the known methods of avoiding fog formation is still not satisfactory and that it is not possible to obtain a satisfactory compromise between safety and comfort

Method used

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  • Method and apparatus for avoiding fog formation on window glass of a vehicle
  • Method and apparatus for avoiding fog formation on window glass of a vehicle
  • Method and apparatus for avoiding fog formation on window glass of a vehicle

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Embodiment Construction

[0026] Use of air humidity sensors to determine the potential for fogging of interior window panes in motor vehicles. The relative air humidity measured by the control module and further measured values ​​are used here to determine the dew point temperature of the air inside the vehicle and thus determine the possibility of fogging the window panes. If there is a risk of fogging the window pane, the control module causes an anti-fog operation for the ventilation system and / or air conditioning system, for example by sending air, or more air, or warmer air to the inner surface of the window pane, This prevents the formation of mist. In some cases, for example when warm air is still not available after a cold start, this reduces the thermal comfort of the vehicle occupants. Therefore, in winter, when there is a risk of fogging the window panes, it is generally not possible to use cycling to warm the vehicle interior faster because cycling in the passenger compartment increases a...

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PUM

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Abstract

The present application relates to a method for avoiding fogging of the window panes of a vehicle, in particular a motor vehicle, based on the measured values ​​(S1, S4) of an air humidity sensor and an interior temperature sensor arranged adjacent to each other inside the vehicle, and on the basis of an ambient temperature sensor measurement The measured value of the ambient temperature around the vehicle (S7), activates the anti-fog operation of the vehicle's ventilation system and / or air conditioning system (S11), and determines the dew point temperature based on the measured values ​​(S6, S8). According to the present application, when the dew point temperature is greater than the ambient temperature (S9), the anti-fog operation is activated, or when the time change of the measured value of the air humidity sensor or the time change of the preferred dew point temperature is greater than the preset threshold (S10), the anti-fog operation is activated operate.

Description

technical field [0001] The present application relates to a method and a device for avoiding the formation of fog on the window panes of a motor vehicle. Background technique [0002] Such a method and such a device are known from EP2202107A1. The sensor unit fixed to the inner surface of the windshield of the vehicle includes an air humidity sensor, a first temperature sensor that detects the temperature of the inner surface of the windshield, and a second temperature sensor that detects the temperature of air passing through the air humidity sensor, the The temperature is the temperature of the air adjacent to the inner surface of the windshield. An ambient temperature sensor that detects the temperature of the air outside the vehicle and a coolant temperature sensor are also included. The dew point temperature is determined from the measured value. The anti-fog operation is activated when the temperature of the inner surface of the windshield is lower than the dew poin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60H1/00
CPCB60H1/00785
Inventor 马库斯·马科维茨沃尔特·迈尔迪特玛·费舍尔
Owner FORD GLOBAL TECH LLC