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EF—EL型自然吸气式和EF—JL型涡轮增压汽油喷射发动机主要特点:a.能保证驾驶员按自己的意愿实现轻松而强有力的加速;b.改善使用率高的市内运行工况下的燃油消耗,利用顶置凸轮轴实现每缸四气门结构;改善进排气系统设计;在自然吸气发动机上,将空气滤清器与脉冲室设计成一体,得到平缓的扭矩特性;在涡轮增压发动机上,采用了三分支进气歧管,使其结构形状有利于提高进气惯性和脉冲效应;并分别介绍了F6A型三缸四行程涡轮增压发动机、EN07型直列四缸置凸轮轴发动机、3G83型三缸发动机的主要结构参数、特性曲线及改进措施;找出国产微型汽车发动机的差距并分析其出现这种差距的原因。
EF-EL naturally aspirated and EF-JL-type turbocharged gasoline injection engine main features: a. To ensure that the driver to achieve their own wishes to achieve easy and powerful acceleration; b. To improve the utilization of the city operation Fuel consumption under operating conditions, the use of overhead camshaft to achieve four-valve structure per cylinder; improve intake and exhaust system design; naturally aspirated engine, the air filter and the pulse chamber is designed into one, get a smooth torque characteristics On the turbocharged engine, a three-branch intake manifold is adopted to make the structure of the turbocharged engine improve the intake inertia and pulse effect. The paper introduces the F6A three-cylinder four-stroke turbocharged engine, EN07 in-line four Cylinder camshaft engine, 3G83-type three-cylinder engine’s main structural parameters, characteristic curves and improvements; find the gap between domestic mini-car engine and analyze the causes of this gap.