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NAPS (Nissan Anti Pollution System) [1] is a moniker used in Japan to identify vehicles built with emission control technology. The technology was installed so that their vehicles would be in compliance with Japanese Government emission regulations passed in 1968. The term was first introduced in Japan, with an externally mounted badge on the trunk of vehicles equipped. Nissan's implementation began with the Y44E V8 engine installed in the Nissan President along with all vehicles installed with the Nissan L engine and the Nissan A engine in 1975. The initial introduction of Nissan's technology was the installation of an exhaust gas recirculation valve, followed with the addition of a catalytic converter and an air pump that added oxygen into the exhaust to promote higher temperatures in the catalytic converter, thus cleaning the exhaust further.
The NAPS-Z technology, introduced in 1978, was developed with assistance from Hitachi. [2] It uses a novel implementation of two spark plugs per cylinder, called dual ignition together with electronically controlled fuel injection, installed on the Nissan Z engine. This terminology is often confused with the engine installed in the Nissan 280Z, which used the "L" engine. However, the NAPS technology was installed in the Fairlady/Z and sold internationally.
Another version of the twin spark plug method was introduced on the Nissan Stanza with the CA engine, called NAPS-X, which eventually replaced the NAPS-Z approach. The CA engine implemented a hemispherical cylinder head, an approach used by several auto makers.
A catalytic converter is an exhaust emission control device which 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.
CVCC, or Compound Vortex Controlled Combustion, is an internal combustion engine technology developed and trademarked by the Honda Motor Company.
Vehicle emissions control is the study of reducing the emissions produced by motor vehicles, especially internal combustion engines. The primary emissions studied include hydrocarbons, volatile organic compounds, carbon monoxide, carbon dioxide, nitrogen oxides, particulate matter, and sulfur oxides. Starting in the 1950s and 1960s, various regulatory agencies were formed with a primary focus on studying the vehicle emissions and their effects on human health and the environment. As the worlds understanding of vehicle emissions improved, so did the devices used to mitigate their impacts. The regulatory requirements of the Clean Air Act, which was amended many times, greatly restricted acceptable vehicle emissions. With the restrictions, vehicles started being designed more efficiently by utilizing various emission control systems and devices which became more common in vehicles over time.
The Nissan Micra, also known as the Nissan March, is a supermini car (B-segment) that has been produced by the Japanese automobile manufacturer Nissan since 1982.
The Nissan Bluebird is a compact car produced between 1955 and 2007 with a model name introduced in 1957. It was Nissan's most internationally recognized sedan, known for its dependability and durability in multiple body styles. The Bluebird originated from Nissan's first vehicles, dating to the early 1900s, and its traditional competitor became the Toyota Corona. The Bluebird was positioned to compete with the Corona, as the Corona was developed to continue offering a sedan used as a taxi since the Toyota Crown was growing in size. Every generation of the Bluebird has been available as a taxi, duties that are shared with base level Nissan Cedrics. It is one of the longest-running nameplates from a Japanese automaker. It spawned most of Nissan's products sold internationally, and has been known by a number of different names and bodystyles, including the Auster/Stanza names.
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. 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.
The Nissan Z engine is a series of automobile and light truck four-cylinder engines that was engineered by Nissan Machinery, manufactured by the Nissan Motor Company from 1979 through August 1989. All Z engines had 4 cylinders, a total of 8 valves and a single overhead camshaft (SOHC). Displacements ranged from 1.6 L to 2.4 L.The Z series' engine blocks were nearly identical to those of the earlier L Series with the exception of the Z24. While the Z16 and Z18 engines had a deck height similar to the earlier L13/L14/L16/L18 variants, the Z24 had a taller deck height to accommodate a longer stroke. The most notable difference between the Z-series engine and its predecessor was the introduction of a new crossflow cylinder head which reduced emissions by moving the intake ports to the right side of the engine opposite the exhaust ports. This change allows the exhaust port velocity to more effectively scavenge the cylinder and reduce reversion pulses to enhance induction. This change also limits maximum valve lift/lobe lift profiles rendering the cylinder head and valve train configuration undesirable for high-performance uses. The Z series evolved into the NA and KA engines which, along with the smaller CA series, replaced the Z series.
The Nissan President is a Japanese luxury sedan that was manufactured and marketed by Nissan from 1965 until 2010 as the flagship of Nissan's range, available only at its Nissan Store dealerships then at Nissan Blue Stage dealerships.
A diesel particulate filter (DPF) is a device designed to remove diesel particulate matter or soot from the exhaust gas of a diesel engine.
The Nissan Note is a supermini/subcompact hatchback or a mini MPV manufactured and marketed globally by Nissan. Introduced in 2004, the first-generation Note was primarily marketed in Japan and Europe, and was produced in Japan and the United Kingdom. The second-generation model was sold in other regions, including North America where it was manufactured in Mexico and marketed as the Versa Note, and Thailand, where it serves as one of the B-segment hatchback offered by the brand alongside the smaller March/Micra under the Eco Car tax scheme.
The Nissan MS platform, M&S platform or FF-S platform is an automobile platform for front wheel drive automobiles. According to Nissan in 2000, vehicles built on this platform share floor panel and functional assemblies such as the engine, transmission and chassis components attached to it.
The VR is a series of twin-turbo DOHC V6 automobile engines from Nissan with displacements of 3.0, 3.5, and 3.8 L. An evolution of the widely successful VQ series, it also draws on developments from the VRH, JGTC, and Nissan R390 GT1 Le Mans racing engines.
The Nissan NV200 is a light commercial and leisure activity, 4/5-door van designed and produced by the Japanese automaker Nissan since 2009.
The Honda P engine is an inline three-cylinder gasoline engine first designed for use in Honda kei cars. The P engine was first used in the fourth generation Honda Life, as a successor to the Honda E07A engine. The P engine series was initially produced in only one displacement variant: 658 cc, either naturally aspirated or turbocharged. A turbocharged one-litre version, the P10A, has since been developed. The smaller version was discontinued in December 2013, when it was replaced by the new S07 series engine, but the P10A continues to be built in Thailand.
Dual Ignition is a system for spark-ignition engines, whereby critical ignition components, such as spark plugs and magnetos, are duplicated. Dual ignition is most commonly employed on aero engines, and is sometimes found on cars and motorcycles.
Mitsubishi MCA stands for Mitsubishi Clean Air, a moniker used in Japan to identify vehicles built with emission control technology. The term was first introduced in Japan, with later introductions internationally. The technology first appeared in January 1973 on the Mitsubishi 4G32A gasoline-powered inline four cylinder engine installed in all Mitsubishi vehicles using the 4G32 engine, and the Saturn-6 6G34 six-cylinder gasoline-powered engine installed in the Mitsubishi Debonair. The technology was installed so that their vehicles would be in compliance with Japanese Government emission regulations passed in 1968.
Toyota TTC is a moniker used in Japan to identify vehicles built with emission control technology. The technology was installed so that their vehicles would comply with Japanese emission regulations passed in 1968. The term was introduced in Japan, and it included an externally mounted badge on the trunk of equipped vehicles. The technology first appeared in January 1975 on the Toyota Crown, the Toyota Corona Mark II, the Toyota Corona, the Toyota Chaser, the Toyota Carina, the Toyota Corolla, and the Toyota Sprinter. There were three different versions initially introduced, called TTC-C for Catalyst, installing a catalytic converter, TTC-V for Vortex, installing an exhaust gas recirculation valve, and TTC-L which used a lean burn method. As Toyota's technology evolved the three systems were eventually used in conjunction in future models.
Tokyu Kurogane Industries, or Kurogane, was one of the first Japanese automakers. It built vehicles from about 1926 until 1962 when a subsidiary of Nissan, called Nissan Machinery, assumed operations as the company had become a member of the Nissan Group keiretsu. The word kurogane is an old term for iron, and one of the kanji used in Mr. Makita's first name. Remnants of the company were called Nissan Machinery until 1985, and operated as a separate entity within Nissan Techno until 2006, building and developing all of Nissan's current engines.
NMKV Co., Ltd. is a joint venture company between Nissan Motor Co., Ltd. and Mitsubishi Motors in the Japanese market to design, develop, and manufacture kei cars under Nissan and Mitsubishi brands. The company currently produces Mitsubishi eK, Nissan Dayz, Mitsubishi eK Space and Nissan Roox for the domestic market. NMKV stands for Nissan Mitsubishi Kei Vehicle. Despite that, the abbreviation was never announced officially by the company.
The Nissan TD series is a series of diesel engines manufactured by Nissan. All TD-series engines are inline engines; most versions are four-cylinders aside from the six-cylinder TD42. They have cast iron blocks and crossflow heads; the combustion chamber design is a swirl-chamber design with indirect injection and a gear driven cam. The valves are pushrod-actuated, and the engine has two valves per cylinder; the camshaft is driven by a set of gears. Of a simple, somewhat old-fashioned construction, the engines are generally durable if not very powerful.