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S-VT
S-VT, or Sequential Valve Timing, is an automobile variable valve timing technology developed by Mazda. S-VT varies the timing of the intake valve A valve is a device or natural object that regulates, directs or controls the flow of a fluid (gases, liquids, fluidized solids, or Slurry, slurries) by opening, closing, or partially obstructing various passageways. Valves are technically Pip ...s by using hydraulic pressure to rotate the camshaft. S-VT was introduced in 1998 on the ZL-VE engine and is used in the B-, Z-, MZR- and J-families of engines. See also * Variable valve timing Variable valve timing Mazda Technologies {{Automotive-tech-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mazda Z Engine
The Mazda Z-series is a smaller gasoline inline-four engine ranging in displacements from 1.3 L to 1.6 L. They are the evolution of the cast-iron block B-engine. The Z-engine has 16-valves operated by dual overhead camshafts, which are in turn driven by a timing chain (ZJ/Z6/ZY only). The block of the 98-02 Z5, ZM and ZL engine is cast iron same as the earlier B series of engines. Other Z engines have aluminum alloy block and head, with cast-iron cylinder liners. The block features split upper and lower block assembly for added strength and rigidity, special long intake manifold for added torque, S-VT continuous variable valve timing, and a stainless steel 4:1 exhaust header. In 2011, Mazda started to introduce the SkyActiv-G as a new, more economical option for vehicles that were equipped with the Mazda Z-engine. Production of the Z-series halted in 2014, being the last year of the Mazda2, Verisa as well as Mazda3 of their generations. Mazda moved on to the fu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Variable Valve Timing
Variable valve timing (VVT) is the process of altering the timing of a Poppet valve, valve lift event in an internal combustion engine, and is often used to improve performance, fuel economy or emissions. It is increasingly being used in combination with variable valve lift systems. There are many ways in which this can be achieved, ranging from mechanical devices to electro-hydraulic and camless systems. Increasingly strict emissions regulations are causing many automotive manufacturers to use VVT systems. Two-stroke cycle, Two-stroke engines use a Two-stroke power valve system, power valve system to get similar results to VVT. Background theory The valves within an internal combustion engine are used to control the flow of the intake and exhaust gases into and out of the combustion chamber. The timing, duration and lift of these valve events has a significant impact on engine performance. Without variable valve timing (variable valve lift), the valve timing is the same for all ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mazda B Engine
The Mazda B-series is a small-sized, iron-block, straight-4, inline four-cylinder engine with Timing belt (camshaft), belt-driven SOHC and DOHC valvetrain ranging in displacement from 1.1 to 1.8 litres. It was used in a wide variety of applications, from front-wheel drive economy vehicles to the turbocharged full-time four-wheel drive, 4WD Mazda 323, 323 GTX and rear-wheel drive Mazda Miata, Miata. The B-series is a "non-interference" design, meaning that breakage of its timing belt (camshaft), timing belt does not result in damage to valves or pistons, because the opening of the valves, the depth of the combustion chamber and (in some variants) the shaping of the piston crown allow sufficient clearance for the open valves in any possible piston position. 1.1 liters B1 B1 - (68.0x78.4 mm) - came only as a SOHC 8-valve. It was available in the 1987-1989 Mazda 121 and later model Kia Sephia in European and Asian markets. A fuel-injected variant was used in select European mar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Variable Valve Timing
Variable valve timing (VVT) is the process of altering the timing of a Poppet valve, valve lift event in an internal combustion engine, and is often used to improve performance, fuel economy or emissions. It is increasingly being used in combination with variable valve lift systems. There are many ways in which this can be achieved, ranging from mechanical devices to electro-hydraulic and camless systems. Increasingly strict emissions regulations are causing many automotive manufacturers to use VVT systems. Two-stroke cycle, Two-stroke engines use a Two-stroke power valve system, power valve system to get similar results to VVT. Background theory The valves within an internal combustion engine are used to control the flow of the intake and exhaust gases into and out of the combustion chamber. The timing, duration and lift of these valve events has a significant impact on engine performance. Without variable valve timing (variable valve lift), the valve timing is the same for all ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mazda
is a Japanese Multinational corporation, multinational automotive manufacturer headquartered in Fuchū, Hiroshima (town), Fuchū, Hiroshima Prefecture, Hiroshima, Japan. The company was founded on January 30, 1920, as Toyo Cork Kogyo Co., Ltd., a cork-making factory, by Jujiro Matsuda. The company then acquired Abemaki Tree Cork Company. It changed its name to Toyo Kogyo Co., Ltd. in 1927 and started producing vehicles in 1931. Mazda is known for its innovative technologies, such as the Wankel engine, the SkyActiv platform, and the Kodo Design language. It also has a long history of motorsport involvement, winning the 24 Hours of Le Mans in 1991 with the rotary-powered Mazda 787B. In the past and present, Mazda has been engaged in alliances with other automakers. From 1974 until the late 2000s, Ford Motor Company, Ford was a major shareholder of Mazda. Other partnerships include Toyota, Nissan, Isuzu, Suzuki and Kia. In 2023, it produced 1.1 million vehicles globally. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intake
An intake (also inlet) is an opening, structure or system through which a fluid is admitted to a space or machine as a consequence of a pressure differential between the outside and the inside. The pressure difference may be generated on the inside by a mechanism, or on the outside by ram pressure or hydrostatic pressure. Flow rate through the intake depends on pressure difference, fluid properties, and intake geometry. Intake refers to an opening, or area, together with its defining edge profile which has an associated entry loss, that captures pipe flow from a reservoir or storage tank. Intake refers to the capture area definition and attached ducting to an aircraft gas turbine engine or ramjet engine and, as such, an intake is followed by a compressor or combustion chamber. It may instead be referred to as a diffuser (other), diffuser. For an automobile engine the components through which the air flows to the engine cylinders, are collectively known as an intake syste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poppet Valve
A poppet valve (also sometimes called mushroom valve) is a valve typically used to control the timing and quantity of petrol (gas) or vapour flow into or out of an engine, but with many other applications. It consists of a hole or open-ended chamber, usually round or oval in cross-section, and a plug, usually a disk shape on the end of a shaft known as a valve stem. The working end of this plug, the valve face, is typically ground at a 45° bevel to seal against a corresponding valve seat ground into the rim of the chamber being sealed. The shaft travels through a valve guide to maintain its alignment. A pressure differential on either side of the valve can assist or impair its performance. In exhaust applications higher pressure against the valve helps to seal it, and in intake applications lower pressure helps open it. Etymology The word poppet shares etymology with "puppet": it is from the Middle English ''popet'' ("youth" or "doll"), from Middle French ''poupette'', whic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydraulic
Hydraulics () is a technology and applied science using engineering, chemistry, and other sciences involving the mechanical properties and use of liquids. At a very basic level, hydraulics is the liquid counterpart of pneumatics, which concerns gases. Fluid mechanics provides the theoretical foundation for hydraulics, which focuses on applied engineering using the properties of fluids. In its fluid power applications, hydraulics is used for the generation, control, and transmission of Power (physics), power by the use of pressure, pressurized liquids. Hydraulic topics range through some parts of science and most of engineering modules, and they cover concepts such as pipe Volumetric flow rate, flow, dam design, fluidics, and fluid control circuitry. The principles of hydraulics are in use naturally in the human body within the vascular system and erectile tissue. ''Free surface hydraulics'' is the branch of hydraulics dealing with free surface flow, such as occurring in rivers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Camshaft
A camshaft is a shaft that contains a row of pointed cams in order to convert rotational motion to reciprocating motion. Camshafts are used in piston engines (to operate the intake and exhaust valves), mechanically controlled ignition systems and early electric motor speed controllers. Camshafts in piston engines are usually made from steel or cast iron, and the shape of the cams greatly affects the engine's characteristics. History Trip hammers are one of the early uses of a form of cam to convert rotating motion, e.g. from a waterwheel, into the reciprocating motion of a hammer used in forging or to pound grain. Evidence for these exists back to the Han dynasty in China, and they were widespread by the medieval period. Camshafts were first described by Ismail al-Jazari in 1206. Once the rotative version of the steam engine was developed in the late 18th century, the operation of the valve gear was usually by an eccentric, which turned the rotation of the crankshaft i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mazda MZR Engine
MZR is the brand name of a generation of Inline-four engines engineered and built by the Mazda Motor Corporation from 2001 to the present. MZR stands for "MaZda Responsive". The MZR generation includes gasoline and diesel powered engines ranging in displacements from 1.3 L to 2.5 L. All gasoline-powered MZR engines feature an all-aluminum block construction with iron cylinder liners. The diesel MZR-CD engines use a cast-iron block (virtually identical to the Mazda F engine) and an aluminum cylinder head. Variants There are three specific engine families within the MZR which include: # the small 1.3 L to 1.6 L Mazda Z engine # the mid-sized 1.8 L to 2.5 L Mazda L engine # the 2.0 L and 2.2 L common-rail diesel Mazda R-engine The DISI turbocharged MZR L3-VDT was on the Ward's 10 Best Engines list for 3 consecutive years for 2006, 2007 and 2008. Licensed to Ford The Ford Motor Company co-developed the engines with Mazda during the per ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mazda J Engine
The Mazda J-family are a range of 60-degree V6 engines featuring a cast-iron cylinder block and alloy heads with belt-driven DOHC or SOHC. It is Mazda's only cast-iron gasoline V6. These engines are found in the Mazda H platform-based Mazda 929, Efini MS-9, and Mazda Luce; as well as the L platform Mazda MPV and S platform Mazda Bongo. It was built at the Miyoshi Plant in Miyoshi, Hiroshima, Japan. JF * 2.0 L JF - SOHC 12-valve longitudinally mounted V6. Applications: * 1986-1989 Mazda 929 * 1986-1989 Mazda Luce (Japan) JFT * 2.0 L JFT - a turbocharged variant of the JF engine. JE The JE is a SOHC 18 valve V6 used in the 1989-1998 Mazda MPV and 1988-1991 Mazda 929, and produced and of torque. A JE-ZE DOHC variant was in the 1990-1995 Mazda 929 ''S'', producing . Applications: * 1989-1998 Mazda MPV * 1986-1989 Mazda 929 * 1986-1989 Mazda Luce (Japan) * 1990-1994 Mazda 929 * 1991-1993 Efini MS-9 * 1992-1997 Kia Potentia (South Korea) J5 The 2.5 L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
