liquid-propane engine
71Nitrogen — carbon ← nitrogen → oxygen ↑ N ↓ P …
72Pumpjack — Nodding donkey redirects here. For the British Rail train, see Pacer (train). Pump jack redirects here. For the Scaffold, see Pump jack. A diagram of a pumpjack. A pumpjack (nodding donkey, pumping unit, horsehead pump, beam pump, sucker rod pump …
73environmental works — ▪ civil engineering Introduction infrastructure that provides cities and towns with water supply, waste disposal, and pollution control services. They include extensive networks of reservoirs, pipelines, treatment systems, pumping stations …
74Energy storage — is the storing of some form of energy that can be drawn upon at a later time to perform some useful operation. A device that stores energy is sometimes called an accumulator. All forms of energy are either potential energy (eg. chemical,… …
75Fuel injection — Fuel rail connected to the injectors that are mounted just above the intake manifold on a four cylinder engine. Fuel injection …
76Heat pump — A heat pump is a machine or device that moves heat from one location (the source ) to another location (the sink or heat sink ), using work. Most heat pump technology moves heat from a low temperature heat source to a higher temperature heat sink …
77Alternative fuel — Alternative fuels, also known as non conventional fuels, are any materials or substances that can be used as a fuel, other than conventional fuels. Conventional fuels include: fossil fuels (petroleum (oil), coal, propane, and natural gas), and… …
78Carbon dioxide — Carbon dioxide …
79Steam car — Stanley Steam Car (1912) White touring car (1909) …
80Pneumatic motor — The Victor Tatin airplane of 1879 used a compressed air engine for propulsion. Original craft, at Musée de l Air et de l Espace …
