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所在平台: Udemy |
课程主页: https://www.udemy.com/course/automotive-engineering-digital-powertrain-control-systems/
课程评论：没有评论
# 汽车工程：数字动力总成控制系统 (Coursera 课程总结) 本课程深入探讨了现代汽车动力总成的数字控制系统，重点关注电子控制在发动机、自动变速器以及差速器等关键部件中的应用。 **核心内容概览：** * **动力总成概念的演进：** 课程首先回顾了传统动力总成（发动机、变速器、差速器、驱动轴/车轮）的构成，并强调了随着电子控制技术的引入，电子控制系统已成为动力总成不可或缺的一部分。 * **电子控制的应用领域：** * **发动机控制：** 主要用于满足排放法规、提升燃油经济性以及优化车辆性能。 * **自动变速器控制：** 根据不同的运行条件智能选择换挡时机。 * **差速器控制：** 部分车辆利用电子控制离合器实现牵引力控制。 * **控制系统的集成与独立：** 课程会讨论独立的控制系统（每个部件一个控制器）和集成式控制系统（统一调控整个动力总成），并重点分析集成控制系统在满足排放和燃油经济性法规约束下实现最优车辆性能的优势。 * **发动机运行模式与燃油控制：** 课程将详细讲解发动机的七种主要运行模式，这些模式对燃油控制策略有着至关重要的影响，包括： * 发动机启动（Engine Crank） * 发动机预热（Engine Warm-up） * 开环控制（Open-loop Control） * 闭环控制（Closed-loop Control） * 急加速（Hard Acceleration） * 减速（Deceleration） * 怠速（Idle） * **模式控制逻辑：** 课程将介绍通过传感器数据和定时器来确定发动机运行模式的程序控制逻辑。 **学习目标：** 完成本课程后，学员将能够理解数字动力总成控制系统的基本原理，掌握电子控制在关键动力总成部件中的应用，并深入了解发动机不同运行模式下的控制策略及其对车辆性能、排放和燃油经济性的影响。
Traditionally, the term powertrain has been used to include the engine, transmission, differential, and drive axle/wheel assemblies. With the advent of electronic controls, the powertrain also includes the electronic control system (in whatever configuration it has).In addition to engine control functions for emissions regulation, fuel economy, and performance, electronic controls are also used in the automatic transmission to select shifting as a function of operating conditions.Moreover, certain vehicles employ electronically controlled clutches in the differential (transaxle) for traction control. Electronic controls for these major powertrain components can be either separate (i.e., one for each component) or an integrated system regulating the powertrain as a unit.This latter integrated control system has the benefit of obtaining optimal vehicle performance within the constraints of exhaust emission and fuel economy regulations. Each of the control systems is discussed separately beginning with electronic engine control.In this course we will discussing the various control modes in which the powertrain is operated.For a typical engine, there are at least seven different engine-operating modes that affect fuel control: engine crank, engine warm-up, open-loop control, closed-loop control, hard acceleration, deceleration, and idle. The program for mode control logic determines the engine-operating mode from sensor data and timers. All the above modes will be discussed in detail.
