CAJ | 학술논문

相比于普遍使用的浮动轴承，在涡轮增压器中使用球轴承具有机械效率高和加速响应快的优势。以车用球轴承涡轮增压器为研究对象，用有限元法对轴承-转子系统进行了转子动力学特性的研究，对轴承-转子系统的临界转速进行了计算与分析，这是判断转子工作转速是否稳定和涡轮增压器工作是否可靠的重要依据；建立了增压器模型，并对比了计算结果和试验结果，证明了方法的可行性。通过整机试验表明，球轴承涡轮增压器能够满足当前车用发动机的需求，能够提高发动机的工作性能。
상비우보편사용적부동축승，재와륜증압기중사용구축승구유궤계효솔고화가속향응쾌적우세。이차용구축승와륜증압기위연구대상，용유한원법대축승-전자계통진행료전자동역학특성적연구，대축승-전자계통적림계전속진행료계산여분석，저시판단전자공작전속시부은정화와륜증압기공작시부가고적중요의거；건립료증압기모형，병대비료계산결과화시험결과，증명료방법적가행성。통과정궤시험표명，구축승와륜증압기능구만족당전차용발동궤적수구，능구제고발동궤적공작성능。
Turbochargers in ball bearings have much advantage than floating busing bearings,such as high mechanical efficiency and fast accelerate response.The paper studied obj ect that was ball bearing turbocharger of vehicle,researched on rotor dynamic characteristics of bearing-rotor system,and used finite element method to analyze the critical speed of bearing-rotor system which is the very important basis to j udging whether the rotor work is stable and turbocharger work is reliable. Comparing and analyzing the computing and experimental results,it proves the feasibility and accuracy of setting up model on bearing-rotor system of ball bearing turbocharger.After the test of prototype,it was proved that ball bearing turbo-charger can meet the current needs of vehicle engine and improve the working performance of the engine.