Automotive

Download Advanced electric drive vehicles by Ali Emadi PDF

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 in truth a transparent development to maneuver from inner combustion engines (ICEs) to extra built-in electrified powertrains.

Providing a close evaluate of this starting to be quarter, Advanced electrical force Vehicles starts off with an creation to the car undefined, a proof of the necessity for electrification, and a presentation of the basics of traditional automobiles and ICEs. It then proceeds to deal with the most important elements of electrified vehicles—i.e., energy digital converters, electrical machines, electrical motor controllers, and effort garage structures.

This entire work:

  • Covers extra electrical automobiles (MEVs), hybrid electrical automobiles (HEVs), plug-in hybrid electrical cars (PHEVs), range-extended electrical cars (REEVs), and all-electric autos (EVs) together with battery electrical autos (BEVs) and gasoline mobile automobiles (FCVs)
  • Describes the electrification applied sciences utilized to nonpropulsion rather a lot, corresponding to energy steerage and air-conditioning systems
  • Discusses hybrid battery/ultra-capacitor power garage structures, in addition to 48-V electrification and belt-driven starter generator systems
  • Considers vehicle-to-grid (V2G) interface and electric infrastructure matters, power administration, and optimization in complex electrical force vehicles
  • Contains quite a few illustrations, sensible examples, case experiences, and difficult questions all through to make sure a superior figuring out of key techniques and applications

Advanced electrical force autos makes an excellent textbook for senior-level undergraduate or graduate engineering classes and a undemanding reference for researchers, engineers, managers, and different execs drawn to transportation electrification.

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Extra info for Advanced electric drive vehicles

Example text

5). 1) where Wc is the indicated work per cycle, mf is the fuel mass amount injected per cycle, and QLHV is the lower heat value of the fuel. 5. 2) where cv is the constant-volume heat capacity. 5 Limited-pressure cycle. 4) m f ,3− 4QLHV = mc p (T4 − T3 ) where cp is the constant pressure heat capacity. 7) where γ is the heat capacity ratio. 10) and κv is the volume ratio, defined as As can be seen, when κp = 1, it is Diesel cycle; when κv = 1, it is Otto cycle. Combustion time: In real engine operation, the combustion does not occur instantly as in the ideal cycle.

When the mixed gas is induced into the engine cylinder, it is mixed with the residual gas and is then compressed by the piston during the compression cycle. The combustion starts when SI occurs at the spark plug about the end of the compression cycle. This is the first step of the combustion, called inflammation. After it is initiated by the sparking (inflammation), the mixed gas releases its energy through rapid flame development and propagation. The flame development and propagation differ from cycle to cycle.

The gearbox provides a number of gear reduction ratios, between three and five for passenger cars, and more for heavy commercial vehicles. In determining maximum and minimum gear ratios, we can think back to the two factors that limit conventional vehicle performance. The maximum speed requirement determines the ratio of the highest gear. On the other hand, the gear ratio of the lowest gear is determined by the requirement of the maximum tractive effort or the gradeability, which is often assumed to be 33%.

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