车用 CO2 制冷系统参数优化机制及其性能影响的试验研究
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中图分类号：U469 文献标志码：A DOI： 10.20104/j.cnki.1674-6546.20250147
【Abstract】To investigate the impact of different control strategies on the performance of vehicle CO 2 refrigeration systems，thisstudyconductedbenchtests toanalyzetheeffctsofsupplyairtemperaturerequirements，indorairvolume，nd ambient temperature on the cycle characteristics of aCO 2 refrigeration system with a heat recovery function under constant suplyair temperaturecontrol.Simultaneously，theoptimal discharge pressure fitingcorrelation basedonthedemand for supplyair temperature was established.Research results indicate thatamong theoperatingconditions studied，ambient temperaturehas themostsignificantinfluenceonoptimaldischarge pressure，folowedbyindoorairvolume，whiletheimpact of thesupplyairtmperatureisminimal.Inadition，theevaporatoroutletrefrigeranttemperatureispositivelycorelatedwith theEER，with anaverage increase ofapproximately 2.6%in EER for every 1∘C rise in outlet temperature..The correlation formulaforoptimaldischargepressure，derivedfromtherequirementsofsupplyairtemperature，demonstratesarelativelyhigh credibility，ofering new insights for the optimization of control strategies.
Key words： CO2 refrigeration system，Supply air temperature，Optimal discharge pressure， ontrol strategy
【引用格式】滕海旭，李明，陈绍龙，等.车用 CO2 制冷系统参数优化机制及其性能影响的试验研究[J].汽车工程师，2026（2）： 1-8.TENGHX，LIM，CHENSL，etal.Experimental StudyonParameterOptimization Mechanismand PerformanceImpact of Vehicle CO2 Refrigeration System [J]. Automotive Engineer，2026（2）： 1-8.
1前言
电动汽车因其优异的环保特性成为汽车发展的重要方向，而热管理系统的性能直接影响车辆的能效和续驶里程。（剩余11032字）
