Engine Upper Compartment Partition Panel Set For BMW X5 X6 E70 51717169420

Bayerische Motoren Werke AG, commonly abbreviated to BMW (German pronunciation: [ˌbeːʔɛmˈveː] ), is a German multinational manufacturer of luxury vehicles and motorcycles headquartered in Munich, Bavaria, Germany. The company was founded in 1916 as a manufacturer of aircraft engines, which it produced from 1917 to 1918 and again from 1933 to 1945 creating engines for aircraft that were used in the Second World War.

Automobiles are marketed under the brands BMW, Mini and Rolls-Royce, and motorcycles are marketed under the brand BMW Motorrad. In 2023, BMW was the world's ninth-largest producer of motor vehicles, with 2,555,341 vehicles produced and in 2022 the 7th largest by revenue. In 2023, the company was ranked 46th in the Forbes Global 2000. The company has significant motor-sport history, especially in touring cars, sports cars, and the Isle of Man TT.

BMW is headquartered in Munich and produces motor vehicles in Germany, Brazil, China, India, Mexico, the Netherlands (ceased in 2023), South Africa, the United Kingdom, and the United States. The Quandt family is a long-term shareholder of the company, following investments by the brothers Herbert and Harald Quandt in 1959 that saved BMW from bankruptcy, with the remaining shares owned by the public.

E70 may refer to:

• European route E70
• BMW X5 (E70)
• Toyota Corolla (E70)
• E70, one of the Common ethanol fuel mixtures
• Nokia E70 mobile phone
• King's Indian Defense, Encyclopaedia of Chess Openings code
• Izu-Jūkan Expressway, route E70 in Japan
• Hawtai Lusheng E70, a Chinese saloon

An engine or motor is a machine designed to convert one or more forms of energy into mechanical energy.

Available energy sources include potential energy (e.g. energy of the Earth's gravitational field as exploited in hydroelectric power generation), heat energy (e.g. geothermal), chemical energy, electric potential and nuclear energy (from nuclear fission or nuclear fusion). Many of these processes generate heat as an intermediate energy form; thus heat engines have special importance. Some natural processes, such as atmospheric convection cells convert environmental heat into motion (e.g. in the form of rising air currents). Mechanical energy is of particular importance in transportation, but also plays a role in many industrial processes such as cutting, grinding, crushing, and mixing.

Mechanical heat engines convert heat into work via various thermodynamic processes. The internal combustion engine is perhaps the most common example of a mechanical heat engine in which heat from the combustion of a fuel causes rapid pressurisation of the gaseous combustion products in the combustion chamber, causing them to expand and drive a piston, which turns a crankshaft. Unlike internal combustion engines, a reaction engine (such as a jet engine) produces thrust by expelling reaction mass, in accordance with Newton's third law of motion.

Apart from heat engines, electric motors convert electrical energy into mechanical motion, pneumatic motors use compressed air, and clockwork motors in wind-up toys use elastic energy. In biological systems, molecular motors, like myosins in muscles, use chemical energy to create forces and ultimately motion (a chemical engine, but not a heat engine).

Chemical heat engines which employ air (ambient atmospheric gas) as a part of the fuel reaction are regarded as airbreathing engines. Chemical heat engines designed to operate outside of Earth's atmosphere (e.g. rockets, deeply submerged submarines) need to carry an additional fuel component called the oxidizer (although there exist super-oxidizers suitable for use in rockets, such as fluorine, a more powerful oxidant than oxygen itself); or the application needs to obtain heat by non-chemical means, such as by means of nuclear reactions.

Upper may refer to:

• Shoe upper or vamp, the part of a shoe on the top of the foot
• Stimulant, drugs which induce temporary improvements in either mental or physical function or both
• Upper, the original film title for the 2013 found footage film The Upper Footage
• Dmitri Upper (born 1978), Kazakhstani ice hockey player