Air conditioning system for vehicle

• US 7,107,776 B2
• Filed: 05/20/2004
• Issued: 09/19/2006
• Est. Priority Date: 05/21/2003
• Status: Expired due to Fees

• Current Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Original Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Inventors: Adachi, Hiromitsu, Wakou, Shinichirou, Kubota, Masamichi, Ikura, Hiroshi, Watanabe, Hideki
• Primary Examiner(s): Tapolcai, William E.
• Application Number:
  US10/849,167
• Publication Number:
  US 20040231349A1
• Time in Patent Office: 852 Days
• Field of Search: 621/962, 622/285, 622/36, 623/233, 625/10, 417/3, 417/5, 417/374, 417/429
• US Class Current: 62/196.2
• CPC Class Codes: B60H 1/322 for improving the stop or idling operation of the engine
• CPC Class Codes: B60H 1/3222 characterised by the compressor driving arrangements, e.g. clutches, transmissions or multiple drives B60H1/3208, B60H1/3226 take precedence
• CPC Class Codes: B60H 2001/3236 information from a variable is obtained
• CPC Class Codes: B60H 2001/327 related to a compressing unit
• CPC Class Codes: B60H 2001/3282 to control the air flow
• CPC Class Codes: B60H 2001/3285 related to an expansion unit
• CPC Class Codes: B60H 2001/3294 Compressor drive is hybrid
• CPC Class Codes: F25B 2400/075 with parallel compressors
• CPC Class Codes: F25B 27/00 Machines, plants or systems, using particular sources of energy F25B30/06 takes precedence
• CPC Class Codes: F25B 49/022 Compressor control arrangements

Abstract

An air conditioning system includes a primary or engine-driven compressor that is driven by a primary driving source or engine, and a secondary or motor-driven compressor that is driven by a secondary driving source or motor. The air conditioning system increases in advance an output of the secondary or motor-driven compressor before the primary or engine-driven compressor is stopped. Further, when a load of the secondary or motor-driven compressor becomes a predetermined value while the secondary or motor-driven compressor is in operation, the primary or engine-driven compressor is activated.

Claims

1. An air conditioning system for a vehicle comprising:

a primary compressor that is driven by a primary driving source; and

a secondary compressor that is driven by a secondary driving source, wherein

an output of the secondary compressor is increased in advance before the primary compressor is stopped.

2. The air conditioning system as set forth in claim 1, wherein

in the event that the output of the secondary compressor reaches a predetermined value or greater when the primary compressor is stopped, the primary compressor is activated.

3. The air conditioning system as set forth in claim 1, wherein

in the event that the output of the secondary compressor is the predetermined value or greater when the primary compressor is stopped, the primary compressor is stopped after an elapse of a predetermined length of time.

4. The air conditioning system as set forth in claim 1,

wherein when a load of the secondary compressor becomes a predetermined value while the secondary compressor is in operation, the primary compressor is activated, and an interior temperature of a passenger compartment of the vehicle is maintained at a desired temperature, and

wherein the primary compressor comprises an engine-driven compressor, the secondary compressor comprises a motor-driven compressor, the primary driving source comprises an engine, and the secondary driving source comprises a motor.

5. The air-conditioning system according to claim 4, wherein the motor is electrically connected to a battery via an air conditioner switch and an ignition switch and rotated by the battery to drive the motor-driven compressor.

6. The air conditioning system according to claim 4, wherein the engine-driven and motor-driven compressors are integrated to form a power saving hybrid compressor.

7. The air conditioning system according to claim 4, wherein the motor-driven compressor is an electric compressor connected to the motor by a rotating shaft and an electromagnetic clutch.

8. The air conditioning system according to claim 1, wherein the primary compressor comprises an engine-driven compressor, the secondary compressor comprises a motor-driven compressor, the primary driving source comprises an engine, and the secondary driving source comprises a motor.

9. The air-conditioning system according to claim 8, wherein the motor is electrically connected to a battery via an air conditioner switch and an ignition switch and rotated by the battery to drive the motor-driven compressor.

10. The air conditioning system according to claim 8, wherein the engine-driven and motor-driven compressors are integrated to form a power saving hybrid compressor.

11. The air conditioning system according to claim 8, wherein the motor-driven compressor is an electric compressor connected to the motor by a rotating shaft and an electromagnetic clutch.