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T-head Engine
A T-head engine is an early type of internal combustion engine that became obsolete after World War I. It is a sidevalve engine that is distinguished from the much more common L-head by its placement of the valves. The intake valves are on one side of the engine block and the exhaust valves on the other. Seen from the end of the crankshaft, in cutaway view, the cylinder and combustion chamber resembles a T - hence the name "T-head". An L-head has all valves at the same side. Overview This was an early form of crossflow cylinder head. The design was fairly complex for its day, requiring separate camshafts to operate the intake and exhaust valves. The T-heads themselves were typically complex castings requiring blind bores for the cylinders and valve chambers. This made the engine more expensive to produce than a comparable L-head (flathead) engine. Additionally, it was also quite heavy and inefficient for its displacement, producing less horsepower than a flathead or modern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Single-cylinder T-head Engine (Autocar Handbook, 13th Ed, 1935)
A single-cylinder engine, sometimes called a thumper, is a piston engine with one cylinder. This engine is often used for motorcycles, motor scooters, go-karts, all-terrain vehicles, radio-controlled vehicles, portable tools and garden machinery (such as lawnmowers, cultivators, and string trimmers). Single-cylinder engines are made both as 4-strokes and 2-strokes. Characteristics Compared with multi-cylinder engines, single-cylinder engines are usually simpler and compact. Due to the greater potential for airflow around all sides of the cylinder, air cooling is often more effective for single cylinder engines than multi-cylinder engines. This reduces the weight and complexity of air-cooled single-cylinder engines, compared with liquid-cooled engines. Drawbacks of single-cylinder engines include a more pulsating power delivery through each cycle and higher levels of vibration. The uneven power delivery means that often a single-cylinder engine requires a heavier flywheel than ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tetraethyl Lead
Tetraethyllead (commonly styled tetraethyl lead), abbreviated TEL, is an organolead compound with the formula Pb( C2H5)4. It is a fuel additive, first being mixed with gasoline beginning in the 1920s as a patented octane rating booster that allowed engine compression to be raised substantially. This in turn increased vehicle performance and fuel economy. TEL was first synthesised by German chemist Carl Jacob Löwig in 1853. American chemical engineer Thomas Midgley Jr., who was working for General Motors, was the first to discover its effectiveness as an antiknock agent in 1921, after spending several years attempting to find an additive that was both highly effective and inexpensive. Concerns were later raised over the toxic effects of lead, especially on children. On cars not designed to operate on leaded gasoline, lead and lead oxides coat the catalyst in catalytic converters, rendering them ineffective, and can sometimes foul spark plugs. Starting in the 1970s, many count ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engine Technology
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, so 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 whi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cylinder Head
In an internal combustion engine, the cylinder head (often abbreviated to simply "head") sits above the cylinders and forms the roof of the combustion chamber. In sidevalve engines, the head is a simple sheet of metal; whereas in more modern overhead valve and overhead camshaft engines, the cylinder head is a more complicated block often containing inlet and exhaust passages, coolant passages, valves, camshafts, spark plugs and fuel injectors. Most straight engines have a single cylinder head shared by all of the cylinders and most V engines have two cylinder heads (one per bank of cylinders). Design A summary of engine designs is shown below, in chronological order for automobile usage. Sidevalve engines In a flathead (''sidevalve'') engine, all of the valvetrain components are contained within the block, therefore the head is usually a simple sheet of metal bolted to the top of the engine block. Sidevalve engines were once universal in automobiles but are now lar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cam-in-block Valvetrain Configurations
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A cam-in-block engine is where the camshaft is located in the engine block. Types of cam-in-block engines are: * F-Head Engine * Flathead engine * Overhead valve engine (the only type where the valves are above the combustion chamber) * T-head engine A T-head engine is an early type of internal combustion engine that became obsolete after World War I. It is a sidevalve engine that is distinguished from the much more common L-head by its placement of the valves. The intake valves are on one ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American LaFrance
American LaFrance (ALF) was an American vehicle manufacturer which focused primarily on the production of fire engines, fire aerials, and emergency apparatus such as ambulance and rescue vehicles. Originally located in Elmira, New York, the final iteration of the company was located in Summerville, South Carolina. It also operated a Canadian plant in Toronto, Ontario, where it sold apparatus under the name LaFrance-Foamite, until 1971. Ward LaFrance, a unrelated competitor fire-apparatus manufacturer also based in Elmira Heights, New York, was founded by a LaFrance family member. On 17 January 2014, the company announced the cessation of operations. Ward LaFrance went bankrupt in July 1979, and was later reopened by a different party, under the name of Ward '79. There is no association. History With roots dating to 1832, the American LaFrance Fire Engine Company was one of the oldest fire apparatus manufacturers in the United States. Founded in 1873 by Truxton Slocum LaFranc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pierce-Arrow
The Pierce-Arrow Motor Car Company was an American motor vehicle manufacturer based in Buffalo, New York, which was active from 1901 to 1938. Although best known for its expensive luxury cars, Pierce-Arrow also manufactured commercial trucks, fire trucks, boats, camp trailers, motorcycles, and bicycles. The beginning of the company The forerunner of Pierce-Arrow was established in 1865 as Heinz, Pierce and Munschauer. The company was best known for its household items, especially its delicate, gilded birdcages. In 1872, George Norman Pierce (1846–1910) bought out the other two principals of the company, changed the name to the George N. Pierce Company, and in 1896 added bicycles to the product line. The company failed in its attempt to build a steam-powered car in 1900 under license from Overman, but by 1901, had built its first single-cylinder, two-speed, no-reverse ''Motorette''. Motorette image In 1903, it produced a two-cylinder car, the ''Arrow''. In 1904, Pierce dec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Locomobile Company Of America
The Locomobile Company of America was a pioneering American automobile manufacturer founded in 1899, and known for its dedication to precision before the assembly-line era. It was one of the earliest car manufacturers in the advent of the automobile age. For the first two years after its founding, the company was located in Watertown, Massachusetts. Production was transferred to Bridgeport, Connecticut, in 1900, where it remained until the company's demise in 1929. The company manufactured affordable, small steam cars until 1903, when production switched entirely to internal combustion-powered luxury automobiles. Locomobile was taken over in 1922 by Durant Motors and eventually went out of business in 1929. All cars ever produced by the original company were always sold under the brand name Locomobile. History The Locomobile Company of America was founded in 1899, the name coined from "locomotive" and "automobile". John B. Walker, editor and publisher of ''Cosmopolitan'', bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stutz Motor Company
The Stutz Motor Car Company, was an American producer of high-end Sports cars, sports and Luxury vehicle, luxury cars based in Indianapolis, Indiana. Production began in 1911 and ended in 1935. Stutz was known as a producer of fast cars including America's first sports car and, from 1924, luxury cars for the rich and famous. The brand was revived in 1968 under the aegis of the Stutz Motor Car of America and it unveiled a line of Neoclassic (automobile), modern retro-look cars. Although the company is still in existence, sales of factory-produced vehicles ceased in 1995. History Ideal Motor Car Company, organized in June 1911 by Harry C. Stutz with his friend, Henry F Campbell, began building Stutz cars in Indianapolis in 1911.Listing Statements of the New York Stock Exchange, September 13, 1916. They set this business up after a car built by Stutz in under five weeks and entered in the name of his Stutz Auto Parts Co was placed 11th in the Indianapolis 500 earning it the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mercedes (car)
Mercedes () is a brand originally created by the Daimler-Motoren-Gesellschaft (DMG) and used for first time in the 35 hp model released by the company in 1901. DMG began to develop in 1900, after the death of its co-founder, Gottlieb Daimler. Although the name was not lodged as a trade name until 23 June 1902 and not registered legally until 26 September, the brand name eventually would be applied to an automobile model built by Wilhelm Maybach to specifications by Emil Jellinek. This vehicle was delivered to him on 22 December 1900. By Jellinek's contract, the new model contained a newly designed engine designated "Daimler-Mercedes". This engine name is the first instance of the use of the name Mercedes by DMG. The automobile design would later be called the ''Mercedes 35 hp''. When DMG merged with Benz & Cie to form " Daimer-Benz" in 1926, the new company became owner of the ''Mercedes'' brand name. Overview Emil Jellinek was an Austrian diplomat based in Nice who ran a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flathead Engine
A flathead engine, also known as a sidevalve engine''American Rodder'', 6/94, pp.45 & 93. or valve-in-block engine is an internal combustion engine with its poppet valves contained within the engine block, instead of in the cylinder head, as in an overhead valve engine. Flatheads were widely used internationally by automobile manufacturers from the late 1890s until the mid-1950s but were replaced by more efficient overhead valve and overhead camshaft engines. They are currently experiencing a revival in low-revving aero-engines such as the D-Motor. The side-valve design The valve gear comprises a camshaft sited low in the cylinder block which operates the poppet valves via tappets and short pushrods (or sometimes with no pushrods at all). The flathead system obviates the need for further valvetrain components such as lengthy pushrods, rocker arms, overhead valves or overhead camshafts. The sidevalves are typically adjacent, sited on one side of the cylinder(s), though some ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compression Ratio
The compression ratio is the ratio between the volume of the cylinder and combustion chamber in an internal combustion engine at their maximum and minimum values. A fundamental specification for such engines, it is measured two ways: the static compression ratio, calculated based on the relative volumes of the combustion chamber and the cylinder when the piston is at the bottom of its stroke, and the volume of the combustion chamber when the piston is at the top of its stroke. The dynamic compression ratio is a more advanced calculation which also takes into account gasses entering and exiting the cylinder during the compression phase. Effect and typical ratios A high compression ratio is desirable because it allows an engine to extract more mechanical energy from a given mass of air–fuel mixture due to its higher thermal efficiency. This occurs because internal combustion engines are heat engines, and higher compression ratios permit the same combustion temperature to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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