Introduction to Hybrid Vehicle System Modeling and Control by Wei Liu

By Wei Liu

This is often an engineering reference booklet on hybrid automobile process research and layout, an outgrowth of the author's significant paintings in learn, improvement and construction on the nationwide learn Council Canada, Azure Dynamics and now normal vehicles. it really is an irreplaceable software for aiding engineers enhance algorithms and achieve a radical knowing of hybrid motor vehicle platforms. This e-book covers all of the significant points of hybrid car modeling, keep watch over, simulation, functionality research and initial layout. It not just systemically offers the elemental wisdom of hybrid car approach configuration and major elements, but in addition information their features and mathematic models.

presents worthy technical services helpful for construction hybrid car process and studying functionality through drivability, gas financial system and emissions
outfitted from the author's adventure at significant automobile businesses together with common cars and Azure Dynamics Inc.
deals set of rules implementations and figures/examples extracted from genuine perform systems
compatible for a coaching path on hybrid motor vehicle procedure improvement with supplemental materials

An crucial source permitting hybrid improvement and layout engineers to appreciate the hybrid car platforms precious for keep watch over set of rules layout and advancements.

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When cranking 7 HYBRID VEHICLE SYSTEM ANALYSIS Engine Generator Motor Propel power Regenerative power Crank power Energy storage system Fig. 1-4. Power flow of series hybrid vehicle. Engine Generator Motor Propel power Regenerative power Energy storage system Crank power Fig. 1-5. Power flow of parallel hybrid vehicle. the engine, the battery will provide electric energy to the generator which works as a motor. In a parallel hybrid, the vehicle can be powered by either the engine or electric motor or both depending on the system state and control objectives.

High-Energy Density Lithium ion batteries generally have more than 200 Wh/L energy density, which makes the battery pack very compact. • High Specific Energy Lithium ion batteries can have more than 250 Wh/kg energy density, which lightens the overall weight of the vehicle. • Wide Operating Temperature Range Many Lithium ion batteries can be operated at between −30 and 50◦ C without decreasing its lifetime. • High-Power Capability Lithium ion batteries can be discharged and charged at higher C-rate at normal operating conditions, so that a small battery pack can meet the peak power requirement and absorb most regenerative energy.

4) Viscous friction torque represents a retarding torque which is a linear relationship between applied torque and angular velocity. Figure 3-1c shows the functional relation between the viscous friction torque and angular velocity. 5) The air compression torque represents a retarding torque created by the high vacuum in the intake or the restriction in the exhaust; therefore, the starter has to 28 HYBRID VEHICLE SYSTEM MODELING drive the pistons to overcome the air compression resistance to fire the engine.

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