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介绍Hyundai公司为小型乘用车最新开发的Kappa双连续可变气门正时(CVVT)汽油机。该汽油机已在印度和韩国的发动机工厂生产,并被配装在i10、i20、Picanto等小型乘用车上,而且进入了包括印度,以及欧洲在内的全球市场。当今,全球汽车制造商正在竞相开发小型乘用车,以应对日益上涨的油价和越来越严格的二氧化碳(CO_2)排放法规。该新型汽油机于2010年11月进入市场,其开发的主要目的是为了降低CO_2排放和改善燃油经济性。作为小型发动机,它的开发还将充裕的扭矩、轻质量、低噪声、低成本和紧凑的尺寸等要求也考虑在内。这种汽油机的主要技术亮点有:(1)采用双CVVT、滚轮摇臂、偏置曲轴、蜂窝式气门弹簧、二硫化钼涂层活塞和低张力活塞环,以改善燃油经济性;(2)采用16气门双顶置凸轮轴、长流道进气歧管、M12长型火花塞、气门正时优化技术,以提升中、低转速时的扭矩;(3)采用梯型框架机体、液压间隙调整器和静音正时链,以降低噪声。此外,为了减轻整机质量,采用了铝机体、塑料气缸盖罩和塑料进气歧管等。
Introducing the Kappa Dual Continuously Variable Valve Timing (CVVT) gasoline engine recently developed by Hyundai for small passenger cars. The gasoline engine has been manufactured at engine plants in India and South Korea and is being fitted to smaller passenger cars like the i10, i20 and Picanto and entering the global market, including India and Europe. Today, global automakers are racing to develop smaller passenger cars to meet rising oil prices and increasingly stringent carbon dioxide (CO2) emissions regulations. The new gasoline engine entered the market in November 2010 and was developed primarily to reduce CO 2 emissions and improve fuel economy. As a small engine, its development also takes into account ample torque, light weight, low noise, low cost and compact size. The main technical highlights of this gasoline engine are: (1) dual CVVT, roller rockers, offset crankshafts, honeycomb valve springs, MoS2 coated pistons and low tension piston rings to improve fuel economy; (2) Adopt 16 valve double overhead camshafts, long runner intake manifold, M12 long spark plug, valve timing optimization technology to enhance the torque at medium and low speed; (3) The ladder frame body, hydraulic clearance adjustment And silent timing chain to reduce noise. In addition, in order to reduce the overall quality, using aluminum body, plastic cylinder head cover and plastic intake manifold.