Automobiles 781 Congresses 556 Design and construction 292 Motor vehicles 235 Motors 234 Diesel motor 122 Electronic equipment 113 more ... Pollution control devices 105 Combustion 87 Exhaust gas 84 Internal combustion engines 83 Testing 73 Materials 64 Diesel motor exhaust gas 63 Safety measures 61 Trucks 61 Internal combustion engines, Spark ignition 54 Fuel systems 52 Motors (Diesel) 43 Technological innovations 36 Lubrication 34 Airplanes 33 Mathematical models 33 Crashworthiness 32 Research 31 Motor fuels 30 Transmission devices 30 Control systems 29 Environmental aspects 29 Dynamics 28 less ...