Automobiles 877 Congresses 587 Design and construction 326 Motor vehicles 261 Motors 258 Diesel motor 127 Electronic equipment 126 mer ... Pollution control devices 108 Exhaust gas 92 Combustion 90 Internal combustion engines 88 Testing 88 Safety measures 79 Diesel motor exhaust gas 67 Materials 67 Trucks 65 Fuel systems 57 Internal combustion engines, Spark ignition 55 Motors (Diesel) 46 Airplanes 43 Technological innovations 43 Crashworthiness 42 Research 42 Motor fuels 37 Mathematical models 36 Lubrication 35 Transmission devices 35 Dynamics 32 Electric vehicles 32 Environmental aspects 32 mindre ...