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Automatic climate control for a vehicle

A climate control, automatic technology, applied to vehicle components, heating and ventilation control systems, air handling equipment, etc., to achieve the effect of reducing calibration time and cost, and improving thermal comfort

Inactive Publication Date: 2010-01-27
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this improves temperature measurement at breathing altitudes, thermal comfort for vehicle occupants involves more than just temperature measurement

Method used

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  • Automatic climate control for a vehicle
  • Automatic climate control for a vehicle
  • Automatic climate control for a vehicle

Examples

Experimental program
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Effect test

Embodiment Construction

[0011] see figure 1 , showing a portion of a vehicle generally marked 20. Vehicle 20 includes a passenger compartment 22 having a driver's seat 24 for supporting a driver 26 wearing clothing 27 , and a passenger seat 28 for supporting a passenger 30 . The passenger compartment 22 is partially enclosed by a roof 32 , a windshield 34 , a floor 36 , and doors 38 with windows. The instrument panel 40 is located in front of the driver's seat 24 . An HVAC module 42 , which is part of an automatic climate control system 46 , is located behind, inside or below the instrument panel 40 . An HVAC controller 44 communicates with and controls the HVAC module 42 and may be located within or separate from the HVAC module 42 . A fan 60 may be located within the HVAC module 42 to flow air through the module 42 .

[0012] The automatic climate control system 46 also includes: an infrared sensor 48 mounted to the roof 32 for taking infrared measurements in front of the driver 26 of the vehic...

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PUM

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Abstract

A system and method of operating an automatic climate control system for a vehicle is disclosed. The method may include determining a breath level air temperature in a passenger compartment of the vehicle; determining a mean radiant temperature in the passenger compartment; determining an average air velocity in the passenger compartment; determining a clothing level factor, and calculating an equivalent homogeneous temperature based on the breath level air temperature, the mean radiant temperature, the average air velocity and the clothing level factor; comparing the calculated equivalent homogeneous temperature to a desired equivalent homogeneous temperature; and adjusting an output of the automatic climate control system based on the comparison of the calculated equivalent homogeneous temperature to the desired equivalent homogeneous temperature.

Description

technical field [0001] The present invention relates generally to vehicle automatic climate control systems. Background technique [0002] A typical car with an automatic climate control system uses an interior temperature sensor mounted in the dashboard, in combination with an ambient air temperature sensor and sometimes a solar load sensor, as input to the automatic climate control system. The automatic climate control system then uses these inputs along with the user-defined desired temperature to determine the appropriate discharge air temperature, fan speed, and heating-ventilation-air conditioning (HVAC) mode. However, due to air stratification, heat is stored in the dashboard and exhausted from nearby HVAC vents, reducing the temperature measurement accuracy of the in-vehicle temperature sensor. In some vehicle tests, the temperature measured by the interior temperature sensor differed by 10 degrees Celsius from the air temperature measured at breathing altitude (i.e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60H1/00F24F11/00
CPCB60H2001/00992B60H1/00807B60H1/00642B60H1/00742B60H2001/00733
Inventor T·韩J·P·约翰逊
Owner GM GLOBAL TECH OPERATIONS LLC
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