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Two-stroke Power Valve System
{{Unreferenced, date=February 2018 The two-stroke power valve system is an improvement to a conventional two-stroke engine that gives a high power output over a wider revolutions per minute, RPM range. Operation of a two-stroke engine A ''stroke (engine), stroke'' is the action of a piston travelling the full length of its Cylinder (engine), cylinder. In a two-stroke engine, one of the two strokes combines primarily the intake stroke and the compression stroke, combustion stroke, while the other stroke primarily combines the Power stroke (engine)#Power stroke, compression stroke and the exhaust stroke, though technically since both ports are exposed during both the combustion and compression strokes, some reversion does occur. As the piston travels upward in the cylinder, it creates low pressure area in the crankcase; this draws fresh air and atomized fuel from the carburetor through a hole in the cylinder wall or directly into the crankcase. As the piston continues travelling ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Two-stroke Engine
A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a Thermodynamic power cycle, power cycle with two strokes of the piston, one up and one down, in one revolution of the crankshaft in contrast to a four-stroke engine which requires four strokes of the piston in two crankshaft revolutions to complete a power cycle. During the stroke from bottom dead center to top dead center, the end of the exhaust/intake (or Scavenging (automotive), scavenging) is completed along with the compression of the mixture. The second stroke encompasses the combustion of the mixture, the expansion of the burnt mixture and, near bottom dead center, the beginning of the scavenging flows. Two-stroke engines often have a higher power-to-weight ratio than a four-stroke engine, since their power stroke occurs twice as often. Two-stroke engines can also have fewer moving parts, and thus be cheaper to manufacture and weigh less. In countries and regions with stringe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fuel Injection
Fuel injection is the introduction of fuel in an internal combustion engine, most commonly automotive engines, by the means of a fuel injector. This article focuses on fuel injection in reciprocating piston and Wankel rotary engines. All compression-ignition engines (e.g. diesel engines), and many spark-ignition engines (i.e. petrol (gasoline) engines, such as Otto or Wankel), use fuel injection of one kind or another. Mass-produced diesel engines for passenger cars (such as the Mercedes-Benz OM 138) became available in the late 1930s and early 1940s, being the first fuel-injected engines for passenger car use. In passenger car petrol engines, fuel injection was introduced in the early 1950s and gradually gained prevalence until it had largely replaced carburetors by the early 1990s. The primary difference between carburetion and fuel injection is that fuel injection atomizes the fuel through a small nozzle under high pressure, while carburetion relies on suction crea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engine Valves
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 hea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NSR125
The Honda NSR125 is a ' sport bike produced between 1988 and 2001 by Honda. The bike is powered by a two-stroke, RC-valve equipped, single-cylinder engine with a redline at 11,000 rpm. The name ''NSR125'' is taken from the NSR500 GP bike. History and development There were two models of the NSR125; the JC20 produced between 1988 and 1994 and the JC22 ''Foxeye'' produced between 1994 and 2001. They are easily distinguished by the headlights. The JC20 had double round headlight, while the JC22 had a "foxeye" headlight hence the nickname. Following the success of the NS125 (an earlier model to the NSR), the NSR125 JC20 was designed and assembled by Honda Italia Industriale S.p.A. in Rome, Italy. Grimeca was contracted to produce the aluminium cast frame (2-piece, die-cast, bolt together construction), wheels and brake assemblies. The engine was manufactured by Gilardoni with Dell'Orto supplying the carburetor. Marzocchi supplied forks and suspension while Pagani provided i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Honda FC50
The Honda FC50, also known as the Honda Beat, is a scooter manufactured by Honda in 1983. It was produced mainly for the Japanese domestic market — although both new and used models were exported from Japan—making it a fairly hard-to-find scooter. It was available in red, black, or white. The FC50 was powered by a liquid cooled, single cylinder, two-stroke petrol engine, one of the most powerful in its class. The small radiator was fitted behind the grill between the two headlights. It featured 12-volt electric start and CVT transmission; the transmission changed from low to high at around 5500 rpm. It had an automatic centrifugal clutch that engaged gradually from 3000 rpm. It was made to carry only one person at a time and had no provisions for a passenger. It featured V-TACS; this was a small valve in the exhaust port that was closed to activate using a lever operated by rider's left heel. Many other larger two-stroke engines use a similar system although most are e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Honda
commonly known as just Honda, is a Japanese multinational corporation, multinational Conglomerate (company), conglomerate automotive manufacturer headquartered in Minato, Tokyo, Japan. Founded in October 1946 by Soichiro Honda, Honda has been the world's largest motorcycle manufacturer since 1959, reaching a production of 500 million . It is also the world's largest manufacturer of internal combustion engines measured by number of units, producing more than 14 million internal combustion engines each year. Honda became the second-largest Japanese automobile manufacturer in 2001. In 2015, Honda was the eighth largest automobile manufacturer in the world. The company has also built and sold the most produced motor vehicle in history, the Honda Super Cub. Honda was the first Japanese automobile manufacturer to release a dedicated luxury brand, Acura, on 27 March 1986. Aside from their core automobile and motorcycle businesses, Honda also manufactures garden equipment, marine eng ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VTAC Diagram , a variable valve timing system used in Honda engines
{{Disambiguation ...
VTAC may mean: * Victorian Tertiary Admissions Centre * Vietnam Tactical Tomahawk * VTAC, vertical design of a packaged terminal air conditioner (PTAC). See also * Ventricular tachycardia, or V-tach, an irregular beating of the heart * Two-stroke power valve system#Honda V-TACS, a foot-operated power valve system made by Honda * VTEC VTEC (described as ''Variable Valve Timing & Lift Electronic Control'', but stands for ''Valve Timing Electronically Controlled'') is a system developed by Honda to improve the volumetric efficiency of a four-stroke internal combustion engine, r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kadenacy Effect
The Kadenacy effect is an effect of pressure-waves in gases. It is named after Michel Kadenacy who obtained a French patent for an engine utilizing the effect in 1933. There are also European and US patents. In simple terms, the momentum of the exhaust gas leaving the cylinder of an internal combustion engine creates a pressure-drop in the cylinder which assists the flow of a fresh charge of air, or fuel-air mixture, into the cylinder. The effect can be maximized by careful design of the inlet and exhaust passages. Uses The Kadenacy effect has been utilized in pulse jet engines and in two-stroke piston engines and is important in the design of high-performance motorcycle engines. Pulse jets Two-stroke engines In a two-stroke engine the pressure-drop resulting from the Kadenacy effect assists the flow of a fresh fuel-air mixture charge into the cylinder. However, the Kadenacy effect alone is not sufficient and must be boosted in some way. In small engines this is done by crankcas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yamaha Motor Company Ltd
Yamaha may refer to: People * Torakusu Yamaha, a Japanese businessman and founder of the Yamaha Corporation Companies * Yamaha Corporation, a Japanese musical instrument and audio equipment manufacturer ** Yamaha Music Foundation, an organization established by Yamaha Corporation ** Yamaha Pro Audio, a Yamaha division specializing in products for the professional audio market * Yamaha Motor Company, a Japanese mobility manufacturer, spun off from Yamaha Corporation ** Yamaha Motor Racing, the MotoGP factory team of Yamaha Motor Company Other uses * Shizuoka Blue Revs, formerly Yamaha Júbilo, a Japanese rugby team * Yamaha Stadium, a football stadium located in Iwata, Shizuoka Prefecture {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Servo Motor
A servomotor (or servo motor or simply servo) is a rotary or linear actuator that allows for precise control of angular or linear position, velocity, and acceleration in a mechanical system. It constitutes part of a servomechanism, and consists of a suitable motor coupled to a sensor for position feedback and a controller (often a dedicated module designed specifically for servomotors). Servomotors are not a specific class of motor, although the term ''servomotor'' is often used to refer to a motor suitable for use in a closed-loop control system. Servomotors are used in applications such as robotics, CNC machinery, and automated manufacturing. Mechanism A servomotor is a closed-loop servomechanism that uses position feedback (either linear or rotational position) to control its motion and final position. The input to its control is a signal (either analog or digital) representing the desired position of the output shaft. The motor is paired with some type of position enc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suzuki RG150
The Suzuki RG 150 Gamma was a 148 cc two-stroke racing motorcycle produced by Suzuki mainly in Thailand from 1992 to 2000. In 1998, it was selected as the second-best new motorcycle of 1998 by ''Motor Trend'' magazine. Overview The frame of the RG 150 Gamma was made of box-cut steel and had a banana-shaped rear swingarm. It had a single mono shock on the rear with a single disc brake. The front suspension was a traditional telescopic fork (that could be preloaded) also with a single disc brake and the wheels were tri-spoke Enkei mag-type wheels. The engine was a single-cylinder water-cooled two-stroke engine paired to a six-speed close ratio gearbox with a kick-start. The engine featured AETC (Automatic Exhaust Timing Control), basically a valve in the exhaust port of the engine. At low rpm it restricted the exhaust gases so the engine produced more torque; at high rpm (approx 7,800 rpm), it opened up to increase top end power. The exhaust also had an expansion chamber ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
