Patent ID: 8567206
Filing Date: 2013-10-29
Classification: B60H,F25B,G05B

Abstract:
1. A vehicle air conditioning system, comprising: a low pressure section including an air conditioning evaporator, the low pressure section having a prescribed operating range bounded by at least a first fixed operation threshold; a compressor in fluid communication with the air conditioning evaporator; a sensor arranged to detect an operating condition of the low pressure section; and a controller operably connected to the sensor and the compressor, the controller initially controlling operation of the compressor to switch from one of inactive and active states to the other in response to detecting that the operating condition is equal to or surpasses the first operation threshold, the controller further determining a first time delay corresponding to a time occurring between initiating the switch from the one of the inactive and active states to the other of the compressor and an actual change in the operating condition due to the switch from the one of the inactive and active states to the other of the compressor; and the controller further subsequently defining a first limit that is offset from the first operation threshold such that the controller controls the operation of the compressor to subsequently switch from the one of inactive and active states to the other in response to detecting that the operating condition is equal to or surpasses the first limit, the controller being further configured to repeatedly re-adjust the first limit in response to re-determining the first time delay.