Higher efficiency Efficiency 13 Temperature 4 Electrocatalysts 3 Low-costs 3 Atomic scale 2 Azo dyes 2 Carbon dioxide 2 Catalyst activity 2 Combustion 2 Combustion stability 2 Cylinder pressure sensor 2 Diesel engines 2 Durability 2 Efficiency savings 2 Energy conservation 2 Engine cylinders 2 Exhaust gas recirculation 2 Gases 2 Gasoline 2 Gasoline engines 2 Hybrid gasoline engine 2 III-V semiconductors 2 In-cylinder pressure sensor 2 In-cylinder pressures 2 Lead compounds 2 Liquefaction 2 Lows-temperatures 2 Metals 2 Metasurface 2