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Air conditioning system for vehicles

An air-conditioning system and vehicle technology, applied to vehicle components, air handling equipment, pump control, etc., can solve problems such as increased power consumption of compressors, deterioration of vehicle acceleration performance, etc., to reduce fuel consumption, improve acceleration performance, and maintain comfort degree of effect

Inactive Publication Date: 2006-09-13
SANDEN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the power consumption of the compressor will increase with the increase of the engine speed, and the acceleration performance of the vehicle may be significantly deteriorated

Method used

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  • Air conditioning system for vehicles
  • Air conditioning system for vehicles
  • Air conditioning system for vehicles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] figure 1 An air conditioning system for a vehicle according to an embodiment of the present invention is shown. exist figure 1 Among them, in the refrigeration cycle 1, a variable displacement compressor 2 is provided to change its displacement. The compressor 2 is driven by a vehicle engine (not shown), and the driving force of the engine is transmitted to the compressor 2 via an electromagnetic clutch or the like. Refrigerant circulates in a refrigerant line of the refrigeration cycle 1, and is compressed by a compressor 2 to obtain high-temperature and high-pressure refrigerant. The refrigerant exchanges heat with the outside air in the condenser 3, and the refrigerant is cooled, condensed, and liquefied in the condenser. The refrigerant in the gas phase and the refrigerant in the liquid phase are separated by the receiver drier 4, and the liquid refrigerant is separated by the expansion mechanism 5 ( E.g Expansion valve) expands and depressurizes. The refriger...

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PUM

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Abstract

An air conditioning system for vehicles includes a refrigeration cycle having a variable displacement compressor with a displacement control valve, for controlling a discharge amount of the compressor, so that a pressure difference (Pd-Ps) between a discharged refrigerant pressure (Pd) and a drawn-refrigerant pressure (Ps) equals a set value, an acceleration state detecting device, and an engine rotational speed detecting device. The system further includes a device for determining a condition in which the acceleration state is detected or a condition in which the engine rotational speed equals or is greater than a set value as an elevated compressor load condition, and during the elevated compressor load condition, controlling the discharge amount of the compressor, so that the pressure difference (Pd-Ps) equals or is less than a pressure difference (Pd-Ps) immediately before elevated the compressor load condition.

Description

technical field [0001] The present invention relates to an air conditioning system for a vehicle, and more particularly to an air conditioning system for a vehicle which, without adversely affecting the operation of the air conditioning or the performance of the vehicle, or both, By appropriately reducing the displacement of the compressor during acceleration, the acceleration performance of the vehicle is improved. Background technique [0002] In a known technology, a refrigeration cycle has a variable displacement compressor, and the power consumed to drive the compressor can be reduced by reducing the displacement of the compressor during vehicle acceleration. The power consumed by the compressor can be reduced to be used for the power of the vehicle, and this certain amount of power can be used to improve the acceleration performance of the vehicle. In Published Japanese Patent Application No. JP-A-57-175422. [0003] However, the known technique of reducing the displ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C14/00F02D29/04B60H1/32
CPCB60H2001/3261B60H1/3216B60H2001/325B60H2001/3275B60H1/3208B60H2001/3266
Inventor 今井智规坪井政人
Owner SANDEN CORP