Related by context. Frequent words. (Click for all words.) 57 Westport Innovations 57 Westport Innovations Inc. 55 O2Diesel 52 QuestAir 51 Dynetek 51 IMPCO 50 Balqon Corporation 50 Dynamotive 50 Daimler Buses 50 Xebec 49 Alter NRG 49 diesel engine 48 Catalytica Energy Systems 48 NOx reduction 48 CODA Automotive 48 EcoloCap 47 NASDAQ BLDP 47 Selective Catalytic Reduction SCR 47 Azure Dynamics 47 UQM 47 HyPower 47 diesel engines 47 CNG 47 BIOX 47 Volvo Powertrain 47 diesel 47 Microgy 47 FuelCell Energy 47 Nexterra 47 DTNA 47 BioOil 47 Balqon 47 EcoloCap Solutions Inc. 46 plasma gasification 45 compressed natural 45 Future Fuels 45 Hy Drive 45 Shell Hydrogen 45 cellulose ethanol 45 hybrid propulsion 45 electric powertrains 45 Capstone Turbine Corporation 45 NGVs 44 Marsulex 44 Syngas 44 aftertreatment 44 Cheniere Energy Partners 44 BlueFire Ethanol 44 Clean Diesel Technologies 44 IdaTech 44 SatCon 44 Autogas 44 Lignol 44 Hydrogen Fuel Cell 44 NYSE Arca EEE 44 Q# NextGen aircraft 44 Hydrogenics Corporation 44 Enova Systems 44 NYSE CMI 44 Hydrogenics 43 B# #ER 43 Railpower 43 Enova 43 Energtek 43 CALSTART 43 FuelCell 43 Wescast 43 diesel powered 43 FuelCell Energy Inc. 43 Kenworth T# [001] 43 BOC Aviation 43 Clean Diesel 43 Cobasys 43 desulfurization 43 Exousia 43 biodiesel 43 microturbine 43 hybrid electric 43 Dodge Sprinter 43 Rentech 43 microturbines 43 electric powertrain 42 Hybrid Electric 42 LNG liquefied natural 42 DCP Midstream Partners 42 sulfur fuels 42 Johnson Controls Saft 42 StandardAero 42 GreenHunter Energy 42 Electro Motive Diesel 42 Savi Networks 42 gasification 42 Plasco 42 biomethane 42 GreenHunter 42 Wabtec 42 hybrid powertrains 42 CSRV 42 Odyne 42 bio diesel 42 EcoBoost engines