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[Datsun 1200 encyclopedia]

NAPS

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&#12510;&#12540;&#12463;&#12288;&#12456;&#12531;&#12502;&#12524;&#12512;&#12288;NAPS &#12510;&#12540;&#12463;&#12288;&#12456;&#12531;&#12502;&#12524;&#12512;&#12288;NAPS
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 += NAPS-Z =
 +To meet 53-year (1978) emission standards, NAPS-Z was introduced. Fast burn combustion chamber with dual spark plugs to reduce noise. To improve power a turbocharged option engine was available (Z18T).
 +
 +High fuel efficiency is realized by the adoption of a fast-burn combustion system, made possible by the development of a high-speed swirl system and twin-plug combustion chambers. Advanced EGR with a VVT valve obtains precise control. EGR distribution is improved by modification to the inlet manifold.
 +
 +However, regular NAPS was modified to meet the 1978 emission standards, so the NAPS-Z was not entirely necessary. For example, VVT was adapted to the A-series engines with similar effect.
= Timeline = = Timeline =

Revision as of 03:20, 27 February 2011

Nissan Anti-Pollution System (NAPS) was the market name for Nissan's collection of Emission controls. Sometimes confused with the Nissan Z Engine. NAPS was used in 1976 on many types of Nissan engines, including A14 engines. A catalytic converter was the heart of the NAPS system.

Overview

NAPS日産排出ガス清浄化システム -- Nissan NAPS exhaust gas cleaning system.

エンジン改良+酸化触媒」- slogan "Improved engine + oxidation catalyst system"

reference: http://www.nissan.co.jp/MUSEUM/SILVIA/S10/main.html

32-page publicity booklet from 1 April 1975
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NAPS L-series Carburetor Specifications 1975 service manual 330
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NAPS A-series Engine
22865.jpg

  • 127 pages


NAPS emblem for Japan-market Datsun B210
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  • 84890-F2000 MARK-REAR 'NAPS'

マーク エンブレム NAPS

NAPS-Z

To meet 53-year (1978) emission standards, NAPS-Z was introduced. Fast burn combustion chamber with dual spark plugs to reduce noise. To improve power a turbocharged option engine was available (Z18T).

High fuel efficiency is realized by the adoption of a fast-burn combustion system, made possible by the development of a high-speed swirl system and twin-plug combustion chambers. Advanced EGR with a VVT valve obtains precise control. EGR distribution is improved by modification to the inlet manifold.

However, regular NAPS was modified to meet the 1978 emission standards, so the NAPS-Z was not entirely necessary. For example, VVT was adapted to the A-series engines with similar effect.

Timeline

Oct 27, 1975: B120 Datsun 1200 Pickup B120

  • H-emissions (H-B120) 50年度排出ガス規制適合。
  • 50th-year relevant regulations of emissions (Showa 50 = 1975).
  • Nissan catalyzed oxidation of exhaust gas cleaning system "NAPS" adopted