Related by context. Frequent words. (Click for all words.) 56 thermochemical 56 stoichiometric 55 evaporative emissions 55 urea injection 54 electrolyzer 54 thermo chemical 54 compressed hydrogen 53 combustion 53 dynamometers 52 Ti VCT 52 adiabatic 52 nitrogen oxide NOx emissions 52 electrochemical reaction 51 spark ignition 51 Coal gasification 51 conventional internal combustion 51 Reverse osmosis 50 microchannel 50 reduce NOx emissions 50 electrolyser 50 granulate 50 chemical reactivity 50 cellulosic materials 50 metal hydride 50 preheating 50 ECUs 49 renewable feedstocks 49 aftertreatment 49 variable valve 49 exothermic 49 fuel injector 49 lignocellulose 49 de ionized 49 BlueTec 49 dry sump 49 algae biomass 49 gasifier 49 mechatronic 49 airflows 49 electrochemical 48 electrically driven 48 ethanol methanol 48 polymerisation 48 liquid electrolyte 48 particulate matter emissions 48 cylinder deactivation 48 drivetrain components 48 reactants 48 NExBTL 48 Fischer Tropsch 48 exhaust gases 48 backpressure 48 servomotors 48 internal combustion engines 47 electrohydraulic 47 magnesium alloys 47 transesterification 47 gasifying 47 thermoelectric materials 47 hydrogen 47 ionic liquid 47 gaseous hydrogen 47 pollutant emissions 47 combustion engine 47 SOFCs 47 Biobutanol 47 parameterization 47 productivities 47 electrolyzers 47 algal biomass 47 Lignin 47 Supercritical 47 combustion engines 47 cellulose ethanol 46 evaporative 46 ultra capacitors 46 microreactor 46 fast pyrolysis 46 venturi 46 lubricating oils 46 multiphysics 46 spintronic 46 ultrapure water 46 gaseous fuels 46 ethyl acetate 46 sorption 46 PCB layout 46 VOC emissions 46 torque vectoring 46 reciprocating engines 46 modularization 46 servomotor 46 NOx 46 drivelines 46 infinitely variable 46 aerodynamic downforce 46 combustion chamber 46 combustion gases 46 cavitation 46 syngas 46 ceria