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Advanced Electric Drive Vehicles (Energy, Power Electronics, by Ali Emadi

By Ali Emadi

Electrification is an evolving paradigm shift within the transportation towards extra effective, greater functionality, more secure, smarter, and extra trustworthy automobiles. there's actually a transparent development to maneuver from inner combustion engines (ICEs) to extra built-in electrified powertrains. supplying a close evaluate of this starting to be quarter, complicated electrical force cars starts with an creation to the automobile undefined, a proof of the necessity for electrification, and a presentation of the basics of traditional cars and ICEs. It then proceeds to handle the foremost parts of electrified vehicles—i.e., energy digital converters, electrical machines, electrical motor controllers, and effort garage platforms. This entire paintings: - Covers extra electrical automobiles (MEVs), hybrid electrical automobiles (HEVs), plug-in hybrid electrical cars (PHEVs), range-extended electrical cars (REEVs), and all-electric cars (EVs) together with battery electrical automobiles (BEVs) and gas mobile autos (FCVs) - Describes the electrification applied sciences utilized to nonpropulsion so much, corresponding to energy guidance and air-conditioning platforms - Discusses hybrid battery/ultra-capacitor power garage platforms, in addition to 48-V electrification and belt-driven starter generator structures - Considers vehicle-to-grid (V2G) interface and electric infrastructure matters, strength administration, and optimization in complex electrical force automobiles - comprises quite a few illustrations, sensible examples, case reports, and demanding questions all through to make sure an excellent realizing of key options and functions complex electrical force automobiles makes an incredible textbook for senior-level undergraduate or graduate engineering classes and a common reference for researchers, engineers, managers, and different execs attracted to transportation electrification.

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Example text

14) The compression ratio is an important parameter that represents how much the charge can be compressed for combustion. Typically, the compression ratio is smaller in the SI engine than that of the CI engine. 3 Other Parameters With the information given above, other basic parameters can be derived straightforwardly. 15) where Ah and Ap are the cylinder head surface area and the piston crown surface area, respectively. 18) where N is the crank shaft rotation speed (rev/s). 19) perFormanCe index Besides the basic parameters of IC engines, some important concepts related to the performance are introduced here.

Speciically, four-stroke cycle and two-stroke cycle are used. Four-stroke cycle is typically used for engines in most of the automobiles due to its high eficiency, while two-stroke cycle has a good feature, that is, it can provide higher power output for a given engine size. Therefore, it is typically used in the situation where the engine size is of signiicance, such as motorcycles. Since the two-stroke cycle has much lower fuel eficiency than that of the four-stroke one, it is seldom adopted in passenger cars and other fuel eficiency-oriented vehicles.

2. Heat transfer: After the combustion, the in-cylinder gas temperature increases signiicantly. The temperature difference between gas temperature and cylinder wall temperature will lead to a heat loss. 6 Real cycle. 3. Exhaust blowdown: When the exhaust valve opens before the exhaust stroke, the in-cylinder pressure will reduce below the isentropic line in the ideal cycle. The in-cylinder pressure reduction will decrease the expansion work. 4. Incomplete combustion and leakage: Incomplete combustion and leakage in the real practice are the other differences between ideal and real cycles.

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