求翻译：摘要:本文概括了汽车发动机的基本构造和工作原理。包括四冲程发动机、汽油喷射系统的工作原理、润滑部位和润滑油路、冷却系的工作原理等。还简略介绍了发动机汽缸的组成及影响：汽缸体、汽缸对数、活塞、缸内直喷技术等。发动机的工作原理是将某种能量转化为机械能的一种机器。其作用是将液体或气体燃烧的化学能通过燃烧后转化为热能，再把热能通过膨胀转化为机械能并对外输出动力，不断循环从而带动汽车的轮轴，形成了汽车的动力来源。是什么意思？

Abstract: This paper summarizes the basic structure and a car engine works. Including four-stroke engine, fuel injection system works, and lubricating oil lubrication, cooling system works and so on. Also briefly describes the composition and impact of the engine cylinder: cylinder block, cylinder o

Summary: This article summarizes the engine of the car's basic structure and how it works. Includes 4 -stroke engine, fuel injection systems work on the principle of parts of the body and lubricants, lubrication, cooling systems of road works, etc. It also provides a brief description of the composi

Abstract: This article summarized the motor car engine fundamental construction and the principle of work.Including four stroke engine, gasoline injection system principle of work, lubrication spot and lubrication oil duct, cooling system principle of work and so on.Also briefly introduced the engin

Abstract: this paper outlines the basic structure and working principle for automobile engines. Includes four-stroke engine, fuel injection system works, lubrication, cooling system parts and lubricants road works. Also briefly describes the composition and effects of engine cylinder: logarithm cyli