on-and-off combustion cycle
61Tractor — This article is about a vehicle used in agriculture or construction. For the power unit of a semi trailer truck (articulated lorry), see tractor unit. For other uses, see Tractor (disambiguation) …
62Nissan Leaf — Manufacturer Nissan …
63LE-7 — The LE 7 and it’s succeeding upgrade model the LE 7A are staged combustion cycle LH2/LOX liquid rocket engines produced in Japan for the H II series of launch vehicles. Design and production work was all done domestically in Japan, the first… …
64Wood fuel — is wood used as fuel. The burning of wood is currently the largest use of energy derived from a solid fuel biomass. Wood fuel can be used for cooking and heating, and occasionally for fueling steam engines and steam turbines that generate… …
65Free-piston engine — The free piston engine is a linear, crankless combustion engine, in which the piston motion is not controlled by a crankshaft but determined by the interaction of forces from the combustion cylinder gases, a rebound device and a load device.The… …
66Crankcase ventilation system — A crankcase ventilation system is a way for gases to escape in a controlled manner from the crankcase of an internal combustion engine. A common type of such system is a positive crankcase ventilation (PCV) system, the heart of which is a PCV… …
67Europe, history of — Introduction history of European peoples and cultures from prehistoric times to the present. Europe is a more ambiguous term than most geographic expressions. Its etymology is doubtful, as is the physical extent of the area it designates.… …
68Pellet stove — A wood pellet stove A pellet stove is a stove that burns compressed wood or biomass pellets to create a source of heat for residential and sometimes industrial spaces. By slowly feeding fuel from a storage container (hopper) into a burn pot area …
69plant — plantable, adj. plantless, adj. plantlike, adj. /plant, plahnt/, n. 1. any member of the kingdom Plantae, comprising multicellular organisms that typically produce their own food from inorganic matter by the process of photosynthesis and that… …
70Radio-controlled model — A radio controlled model (or RC model) is a model that is steerable with the use of radio control. All types of vehicles imaginable have had RC systems installed in them, including cars, boats, planes, and even helicopters and scale railway… …
