This textbook draws on the authors' experience gained by teaching courses for engineering students on e.g. vehicle mechanics, vehicle system design, and chassis design; and on their practical experience as engineering designers for vehicle and chassis components at a major automotive company. The book is primarily intended for students of automotive engineering, but also for all technicians and designers working in this field. Other enthusiastic engineers will also find it to be a useful technical guide. The present volume ( The Automotive Chassis - Volume 2: System Design ) focuses on the…mehr
This textbook draws on the authors' experience gained by teaching courses for engineering students on e.g. vehicle mechanics, vehicle system design, and chassis design; and on their practical experience as engineering designers for vehicle and chassis components at a major automotive company. The book is primarily intended for students of automotive engineering, but also for all technicians and designers working in this field. Other enthusiastic engineers will also find it to be a useful technical guide.
The present volume ( The Automotive Chassis - Volume 2: System Design ) focuses on the automotive chassis as a system, providing readers with the knowledge needed to integrate the individual components described in Volume 1 in a complex system that satisfies customers' expectations. Special emphasis is given to factors influencing system performance, including:
- the influence of the powertrain on vehicle performance. Conventional, hybrid and electric powertrains are considered;
Giancarlo Genta received his degree in aeronautical engineering (1970) and in aerospace engineering (1971) from the Politecnico di Torino. He started his professional career at the Politecnico di Torino as Assistant of Machine Design and Technologies. In 1983 he was appointed Associate Professor of Aeronautical Engines Design at the Aerospace Engineering School of the Politecnico di Torino; in 1990, he was appointed full professor of the same course. From 1989 to 1995, he served as Director of the Mechanical Engineering Department of the Politecnico di Torino. He hold the course of Applied Stress Analysis - II for the joined Master of Science University of Illinois/Politecnico di Torino, at the Politecnico di Torino. He served as a lecturer in the frame of cooperation projects with developing countries, such as in Kenya (2 years), Somalia (6 months), India (1 month) and at the Bureau International du Travail. Since 1996 and 1999, respectively, he has been corresponding member of the Academy of Sciences of Turin and the International Academy of Astronautics; he was elected full member of the latter in 2006. Since 1997 he has been coordinating the Research Doctorate in Mechatronics at Politecnico di Torino. He has been active in research in the field of Machine Design, with a focus on static and dynamic structural analysis. He is author of more than 270 scientific publications, covering many aspects of mechanical design. He is the author of 25 scientific books and 3 science fiction novels. Lorenzo Morello received his degree on Mechanical Automotive Engineering in 1968 from the Politecnico of Torino. He started his professional career at the Politecnico as an Assistant of Machine Design and Technologies. In 1971 he moved to FIAT, and contributed to the development of some cars and of experimental prototypes for the ESV US Program. He also developed some mathematical model for vehicle suspension and road holding simulation. In 1977, he was appointed manager of the Vehicle Research Unit at FIAT, where he lead the development of many prototypes, such as a urban bus with unitized thin steel sheet body and spot welded joints and a hybrid car. In 1980 he was appointed manager of the Engines Research Unit in the same company. In 1983, he was appointed Director of Products Development. His Division of about 400 people was carrying out power train, chassis and bodies studies, as well as prototype construction. He then joined Fiat Auto and lead to the development of some new car petrol engines and the direct injection diesel (the first in the world for automobile application). He was appointed Director for Power Train Engineering in 1987. In 1994, he was appointed Director of Vehicle Engineering at Fiat, and guided the design and testing of bodies, chassis components, electric and electronic systems, wind tunnels, safety center and other facilities. Upon his retirement in 1999, he became consultant of strategic planning at Elasis. Together with the Fiat Research Center, Lorenzo Morello contributed to the planning of some courses at the Faculty of Automotive Engineering of the Politecnico di Torino. He served as contract professor of Vehicle System Design and of Automotive Transmissions Design at both the Politecnico di Torino and the University of Naples. He coauthored The Automotive Body, published by Springer in 2011 (ISBN 978-94-007-0515-9). hnojojkopk
Part III: Functions And Specifications.- Transportation Statistics.- Vehicle Functions.- Regulations.- Part IV The Chassis As A Part Of The Vehicle System.- General Characteristics.- An Overview On Motor Vehicle Aerodynamics.
SYMBOLS LIST; III FUNCTIONS AND SPECIFICATIONS: INTRODUCTION TO PART THREE: 17 TRANSPORTATION STATISTICS: 17.1 Traffic volume; 17.2 Operating fleet; 17.3 Social impact; 18 VEHICLE FUNCTIONS: 18.1 Systemdesign; 18.2 Objective requirements; 18.3 Subjective requirements; 18.4 Aging resistance; 19 REGULATIONS: 19.1 Vehicle system; 19.2 Wheels 19.3 Steering system; 19.4 Braking system; 19.5 Structures; 19.6 Gearbox; IV THE CHASSIS AS A PART OF THE VEHICLE SYSTEM: INTRODUCTION TO PART FOUR: 20 GENERAL CHARACTERISTICS: 20.1 Symmetry considerations; 20.2 Reference frames; 20.3 Position of the center of mass; 20.4 Mass distribution among the various bodies; 20.5 Moments of inertia; 21 AN OVERVIEW ON MOTOR VEHICLE AERODYNAMICS: 21.1 Aerodynamic forces andmoments; 21.2 Aerodynamic field around a vehicle; 21.3 Aerodynamic drag ; 21.4 Lift and pitching moment; 21.5 Side force and roll and yawmoments; 21.6 Experimental study of aerodynamic forces; 21.7 Numerical aerodynamics; 22 PRIME MOVERS FOR MOTOR VEHICLES: 22.1 Vehicular engines; 22.2 Internal combustion engines ; 22.3 Electric vehicles; 22.4 Hybrid vehicles; 23 DRIVING DYNAMIC PERFORMANCE: 23.1 Load distribution on the ground; 23.2 Total resistance to motion; 23.3 Power needed for motion; 23.4 Available power at the wheels; 23.5 Maximum power that can be transferred to the road; 23.6 Maximum speed; 23.7 Gradeability and initial choice of the transmission ratios; 23.8 Fuel consumption at constant speed; 23.9 Vehicle take-off from rest; 23.10 Acceleration; 23.11 Fuel consumption in actual driving conditions; 24 BRAKING DYNAMIC PERFORMANCE: 24.1 Braking in ideal conditions; 24.2 Braking in actual conditions; 24.3 Braking power; 25 HANDLING PERFORMANCE: 25.1 Low-speed or kinematic steering; 25.2 Ideal steering; 25.3 High-speed cornering: simplified approach; 25.4 Definition of understeer and oversteer; 25.5 High-speed cornering; 25.6 Steady-state lateral behavior; 25.7 Neutral-steer point and static margin; 25.8 Response to external forces and moments; 25.9 Slip steering; 25.10 Influence of longitudinal forces on handling; 25.11 Transversal load shift; 25.12 Toe-in; 25.13 Effect of the elasto-kinematic behavior of suspensions and of the compliance of the chassis; 25.14 Stability of the vehicle; 25.15 Unstationary motion; 25.16 Vehicles with two steering axles (4WS); 25.17 Articulated vehicles; 25.18 Multibody articulated vehicles; 25.19 Limits of linearized models; 26 COMFORT PERFORMANCE: 26.1 Internal excitation; 26.2 Road excitation; 26.3 Effects of vibration on the human body; 26.4 Quarter-car models; 26.5 Heave and pitch motion; 26.6 Roll motion; 26.7 Effect of nonlinearities; 26.8 Concluding remarks on ride comfort; 27 CONTROL OF THE CHASSIS AND 'BY WIRE' SYSTEMS:27.1 Motor vehicle control; 27.2 Models for the vehicle-driver system; 27.3 Antilock (ABS) and antispin (ASR) systems; 27.4 Handling control; 27.5 Suspensions control; 27.6 By wire systems; V MATHEMATICAL MODELLING: INTRODUCTION TO PART FIVE: 28 MATHEMATICAL MODELS FOR THE VEHICLE: 28.1 Mathematical models for design; 28.2 Continuous and discretized models; 28.3 Analytical and numerical models; 29 MULTIBODY MODELLING: 29.1 Isolated vehicle; 29.2 Linearized model for the isolated vehicle; 29.3 Model with 10 degrees of freedom with locked controls; 29.4 Models of deformable vehicles; 29.5 Articulated vehicles; 29.6 Gyroscopic moments and other second order effects; 30 TRANSMISSION MODELS: 30.1 Coupling between comfort and drive line vibration; 30.2 Dynamic model of the engine 30.3 Drive line; 30.4 Inertia of the vehicle; 30.5 Linearized drive line model; 30.6 Non-time-invariant models; 30.7 Multibody drive line models; 31 MODELS FOR TILTING BODY VEHICLES: 31.1 Suspensions for high roll angles; 31.2 Linearized rigid body model; 31.3 Dynamic tilting control; 31.4 Handling-comfort coupling; BIBLIOGRAPHY OF VOLUME 2: A EQUATIONS OF
From the reviews: "This comprehensive work on the automotive chassis covers a wide range of topics at a high level--both mathematically and in terms of the state-of-the-art in engineering. The first volume treats wheels, suspensions, steering, brakes, and transmissions. ... Genta's extensive teaching experience at the Politecnico di Torino in Italy combined with Morello's experience as director of vehicle engineering at Fiat allow them to write authoritatively on this topic. ... Summing Up: Recommended. Upper-division undergraduate through professional automotive and mechanical engineering collections." (A. M. Strauss, Choice, Vol. 46 (11), July, 2009)
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