The air conditioning system is the most significant auxiliary load on a vehicle where the compressor consumed the largest from the engine, leading to high fuel consumption. Depending upon nature, the variable-capacity compressor reduces cycling on/off. It delivers cooling/heating to a cabin without adjusting the engine rpm, offering superior part-load performance to improve comfort. Consequently, power consumption is growing as an increase in inefficiency. Additionally, systems with continuous compressor modulation can automatically change their energy consumption as required. The paper aims to save energy by reducing fuel consumption in the system. It is because this technology helps us to deduct energy consumption. The test facilities were designed to determine the system capacity with refrigerant side capacity measurement with a mass flow rate of the refrigerant and enthalpy difference across the evaporator. R-134a is considered a refrigerant in this system. Pulse width modulation (PWM) with a duty cycle is used as a command controller or method of reducing power by pulsing its electrical current by effectively chopping it into discrete parts to control the capacity. The results demonstrate that a system consumed 1.2 kW power at 900 rpm, having 4 kW of the capacity. The system also utilized 2 kW power at 2500 rpm with 4.6 kW capacity, which directs the slight increase in power consumption with a significant increase in capacity. Systems with continuous compressor modulation automatically adjust their energy consumption according to the needs of the application. By using this technology of air conditioning, the owner can reduce energy consumption.

空调系统是车辆上最重要的辅助负载，在这种情况下，压缩机从发动机消耗的能量最大，从而导致高油耗。根据性质，可变容量压缩机可减少循环的开/关。它可以在不调节发动机转速的情况下为机舱提供制冷/制热功能，从而提供出色的部分负荷性能，从而提高了舒适性。因此，功耗随着效率的降低而增长。此外，具有连续压缩机调节功能的系统可以根据需要自动更改其能耗。本文旨在通过减少系统中的燃料消耗来节省能源。这是因为这项技术可以帮助我们减少能耗。设计测试设备的目的是通过测量制冷剂的侧流量来确定系统容量，其中制冷剂的侧流量与制冷剂的质量流量和整个蒸发器的焓差有关。R-134a被认为是该系统中的制冷剂。具有占空比的脉冲宽度调制（PWM）用作命令控制器或通过有效地将其斩波成离散部分以控制容量来通过对其电流产生脉冲来降低功率的方法。结果表明，系统在900 rpm时消耗了1.2 kW功率，容量为4 kW。该系统还以2500 rpm的功率使用了2 kW功率，功率为4.6 kW，这导致功率消耗略有增加，而容量却显着增加。具有连续压缩机调节功能的系统会根据应用需求自动调整能耗。通过使用这种空调技术，业主可以减少能源消耗。