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Lean-burn
Lean-burn refers to the burning of fuel with an excess of air in an internal combustion engine. In lean-burn engines the air:fuel ratio may be as lean as 65:1 (by mass). The air / fuel ratio needed to stoichiometrically combust gasoline, by contrast, is 14.64:1. The excess of air in a lean-burn engine emits far less hydrocarbons. High air–fuel ratios can also be used to reduce losses caused by other engine power management systems such as throttling losses. Principle A lean burn mode is a way to reduce throttling losses. An engine in a typical vehicle is sized for providing the power desired for acceleration, but must operate well below that point in normal steady-speed operation. Ordinarily, the power is cut by partially closing a throttle. However, the extra work done in pumping air through the throttle reduces efficiency. If the fuel/air ratio is reduced, then lower power can be achieved with the throttle closer to fully open, and the efficiency during normal driving (b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catalytic Converter
A catalytic converter is an exhaust emission control device that converts toxic gases and pollutants in exhaust gas from an internal combustion engine into less-toxic pollutants by catalyzing a redox reaction. Catalytic converters are usually used with internal combustion engines fueled by gasoline or diesel, including lean-burn engines, and sometimes on kerosene heaters and stoves. The first widespread introduction of catalytic converters was in the United States automobile market. To comply with the U.S. Environmental Protection Agency's stricter regulation of exhaust emissions, most gasoline-powered vehicles starting with the 1975 model year are equipped with catalytic converters. These "two-way" converters combine oxygen with carbon monoxide (CO) and unburned hydrocarbons (HC) to produce carbon dioxide (CO2) and water (H2O). Although two-way converters on gasoline engines were rendered obsolete in 1981 by "three-way" converters that also reduce oxides of nitrogen (); they ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stratified Charge Engine
A stratified charge engine describes a certain type of internal combustion engine, usually spark ignition (SI) engine that can be used in trucks, automobiles, portable and stationary equipment. The term "stratified charge" refers to the working fluids and fuel vapors entering the cylinder. Usually the fuel is injected into the cylinder or enters as a fuel rich vapor where a spark or other means are used to initiate ignition where the fuel rich zone interacts with the air to promote complete combustion. A stratified charge can allow for slightly higher compression ratios without " knock," and leaner air/fuel ratio than in conventional internal combustion engines. Conventionally, a four-stroke (petrol or gasoline) Otto cycle engine is fueled by drawing a mixture of air and fuel into the combustion chamber during the intake stroke. This produces a homogeneous charge: a homogeneous mixture of air and fuel, which is ignited by a spark plug at a predetermined moment near the top of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biogas
Biogas is a mixture of gases, primarily consisting of methane, carbon dioxide and hydrogen sulphide, produced from raw materials such as agricultural waste, manure, municipal waste, plant material, sewage, green waste and food waste. It is a renewable energy source. Biogas is produced by anaerobic digestion with anaerobic organisms or methanogen inside an anaerobic digester, biodigester or a bioreactor. Biogas is primarily methane () and carbon dioxide () and may have small amounts of hydrogen sulfide (), moisture and siloxanes. The gases methane, hydrogen, and carbon monoxide () can be combusted or oxidized with oxygen. This energy release allows biogas to be used as a fuel; it can be used in fuel cells and for any heating purpose, such as cooking. It can also be used in a gas engine to convert the energy in the gas into electricity and heat. Biogas can be compressed after removal of carbon dioxide and hydrogen sulphide, the same way as natural gas is compressed to CN ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
O2 Sensor
An oxygen sensor (or lambda sensor, where lambda refers to air–fuel equivalence ratio, usually denoted by λ) or probe or sond, is an electronic device that measures the proportion of oxygen (O2) in the gas or liquid being analysed. It was developed by Robert Bosch GmbH during the late 1960s under the supervision of Dr. Günter Bauman. The original sensing element is made with a thimble-shaped zirconia ceramic coated on both the exhaust and reference sides with a thin layer of platinum and comes in both heated and unheated forms. The planar-style sensor entered the market in 1990 and significantly reduced the mass of the ceramic sensing element, as well as incorporating the heater within the ceramic structure. This resulted in a sensor that started sooner and responded faster. The most common application is to measure the exhaust-gas concentration of oxygen for internal combustion engines in automobiles and other vehicles in order to calculate and, if required, dynamically a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rolls-Royce Holdings
Rolls-Royce Holdings plc is a British multinational aerospace and defence company incorporated in February 2011. The company owns Rolls-Royce, a business established in 1904 which today designs, manufactures and distributes power systems for aviation and other industries. Rolls-Royce is the world's second-largest maker of aircraft engines (after General Electric) and has major businesses in the marine propulsion and energy sectors. Rolls-Royce was the world's 16th largest defence contractor in 2018 when measured by defence revenues. Rolls-Royce Holdings plc is listed on the London Stock Exchange, where it is a constituent of the FTSE 100 Index. At the close of London trading on 28 August 2019, the company had a market capitalisation of £4.656bn, the 85th-largest of any company with a primary listing on the London Stock Exchange. The company's registered office is at Kings Place, near Kings Cross in London. History Ownership Rolls-Royce grew from the engineering business ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waukesha Engine
Waukesha is a brand of large stationary reciprocating engines produced by INNIO Waukesha Gas Engines, a business unit of the INNIO Group. For 62 years, Waukesha was an independent supplier of gasoline engines, diesel engines, multifuel engines (gasoline/kerosene/ethanol), and LNG/propane engines to many truck, tractor, heavy equipment, automobile, boat, ship, and engine-generator manufacturers. In 1906, the Waukesha Motor Company was founded in Waukesha, Wisconsin. In 1957, Waukesha bought the Climax Engineering Co. of Clinton, Iowa, also a noted builder of large engines. In 1968, Waukesha Motor Company was acquired by the Bangor-Punta Corporation. In 1973, Waukesha sold the Climax division to the Arrow Engine Company. In 1974, Waukesha Motor Company was sold to Dresser Industries and became Dresser's Waukesha Engine Division; its typical nicknames afterward were Waukesha Engine and Dresser Waukesha. In 1989, Dresser acquired the Brons company of the Netherlands. In 2010, Dresser ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dresser-Rand
Dresser-Rand is an American engineering and manufacturing company owned by Siemens Energy. The company designs, manufactures, and services equipment used in the extraction of petroleum and natural gas. The company was formed in 1986 as a joint venture of Dresser Industries and Ingersoll Rand. History Ingersoll Rand Ingersoll Rand's roots date back to 1871 when Simon Ingersoll formed the Ingersoll Rock Drill Company after patenting a steam-powered rock drill design. The company merged with the Sergeant Drill Company in 1888 and became the Ingersoll-Sergeant Drill Company. In 1905, the company merged with Rand Drill Company, which six years prior had begun manufacturing compressors in Painted Post, New York. The result was the Ingersoll Rand Company. Dresser Industries Dresser Industries was created from the 1938 merger of the Solomon R. Dresser Company (founded in Bradford, Pennsylvania) and the Clark Brothers Company (founded in 1880 in Belmont, New York; moved to Olean, New ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mitsubishi Heavy Industries
is a Japanese multinational engineering, electrical equipment and electronics corporation headquartered in Tokyo, Japan. MHI is one of the core companies of the Mitsubishi Group and its automobile division is the predecessor of Mitsubishi Motors. MHI's products include aerospace and automotive components, air conditioners, elevators, forklift trucks, hydraulic equipment, printing machines, missiles, tanks, power systems, ships, aircraft, railway systems, and space launch vehicles. Through its defense-related activities, it is the world's 23rd-largest defense contractor measured by 2011 defense revenues and the largest based in Japan. History In 1857, at the request of the Tokugawa Shogunate, a group of Dutch engineers were invited, including Dutch naval engineer Hendrik Hardes, and began work on the ''Nagasaki Yotetsusho'' 長崎鎔鉄所 , a modern, Western-style foundry and shipyard near the Dutch settlement of Dejima, at Nagasaki. This was renamed ''Naga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wärtsilä
Wärtsilä Oyj Abp (), trading internationally as Wärtsilä Corporation, is a Finnish company which manufactures and services power sources and other equipment in the marine and energy markets. The core products of Wärtsilä include technologies for the energy sector, including gas, multi-fuel, liquid fuel and biofuel power plants and energy storage systems; and technologies for the marine sector, including cruise ships, ferries, fishing vessels, merchant ships, navy ships, special vessels, tugs, yachts and offshore vessels. Ship design capabilities include ferries, tugs, and vessels for the fishing, merchant, offshore and special segments. Services offerings include online services, underwater services, turbocharger services, and also services for the marine, energy, and oil and gas markets. At the end of June 2018, the company employed more than 19,000 workers. Wärtsilä has two main businesses; Energy Business focusing on the energy market, and Marine Business focusing o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MAN Diesel & Turbo
MAN Energy Solutions SE is a German multinational company based in Augsburg that produces large-bore gas and diesel engines and also turbomachinery for marine, rail and stationary applications, as locomotive and marine propulsion systems, power plant applications, and turbochargers. The company was formed in 2010 from the merger of MAN Diesel and MAN Turbo. MAN Energy Solutions is a subsidiary of the German carmaker Volkswagen Group. The Danish part of the company was formed out of the Burmeister & Wain ship building company, and the marketing name for the largest two-stroke engines still has "B&W" in it. MAN Energy Solutions designs two-stroke and four-stroke engines that are manufactured both by the company and by its licensees. The engines have power outputs ranging from 450 kW to 87 MW. MAN Diesel & Turbo also designs and manufactures gas turbines of up to 50 MW, steam turbines of up to 150 MW and compressors with volume flows of up to 1.5 million m3/h and pressures of u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GE Jenbacher
INNIO Jenbacher designs and manufactures gas engines and cogeneration modules in the Austrian town of Jenbach in Tyrol. It is part of the INNIO portfolio of products and is one of their gas engine technologies; the other being Waukesha Engines. Jenbacher emerged from the former Jenbacher Werke, which was founded in 1959 and manufactured gas and diesel engines, and locomotives. The company was bought out by General Electric in 2003. In November 2018 the company became part of INNIO as part of an acquisition of Advent International and was renamed INNIO Jenbacher GmbH & Co. OHG. History Although the company itself has a relatively short history, its origins go far back. In 1487, a mine and foundry was founded by the Fugger family. In 1657, all Fugger properties in Tyrol were taken over by the state. Due to exhaustion of the copper and silver deposits, the mine changed its focus to iron. The company was acquired by Julius and Theodor Reitlinger in 1881. In 1909, the mine ran out of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MWM International Motores
International Indústria Automotiva da América do Sul Ltda. is a Brazilian company specialised in the manufacturing of diesel engines for automotive applications. Until 2005, it was known as MWM Motores Diesel Ltda. History MWM was founded as Motoren Werke Mannheim AG in Germany in 1922 and established its subsidiary in Brazil in 1953 to circumvent harsh import restrictions and high import tax rates. In 1985 parent company MWM was bought by Klöckner-Humboldt-Deutz AG (KHD) and in March 2005 the subsidiary was sold to Navistar International. Now called "MWM International Ind. de Motores da America do Sul Ltda.", has three manufacturing plants: one in Santo Amaro in São Paulo (headquarters), Canoas in Rio Grande do Sul, and Cordoba in Argentina. MWM is said to have a 36% market share for diesel engines, by number of engines produced. Engines MWM engines power the local versions of the Chevrolet Grand Blazer, Nissan Xterra and Ford F250, among others. MWM diesels were also u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
