STUDY ON EMISSION CONTROL OF USED CARS. (PART 2) CHARACTERISTICS AND EFFECTS OF IGNITION RETARDERS ON THE EMISSION CONTROL OF GASOLINE ENGINES

As a part of measures to control vehicle emissions, ignition retarders, approved by government, have been installed in used cars since 1973 in Japan. Though the retarding of ignition timing is effective in reducing emissions, it also affects engine performance and power, for which reason approval tests were carried out prior to legislation. This paper reports the results of these tests under the following headings; (1) fundamental behaviour of the devices and distributors, especially regarding response to initial carburettor throttle valve opening; (2) degrees of retarded timing under transient and steady driving conditions; (3) effects on combustion and engine power; (4) effects on emissions under 4-mode, 10-mode and other modes representing urban traffic patterns; and (5) required engine maintenance and tuning (idling speed, distributor setting, inlet and exhaust valve clearances, spark plug gaps) to retain the effectiveness of the retarders. /TRRL/

• Corporate Authors:

  Traffic Safety & Nuisance Research Inst, Japan

  Ministry of Transport
  Tokyo, ZZ Jpan   

  Traffic Safety & Nuisance Research Inst, Japan

  Ministry of Transport
  Tokyo, ZZ Jpan   
• Authors:
  • Yoshihara, K
  • ABE, T
  • SATO, Y
• Publication Date: 1975-3

Language

• Japanese

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 113-144
• Serial:
  • Traffic Safety & Nuisance Research Institute Rpt
  • Volume: 50
  • Issue Number: 3
  • Publisher: Traffic Safety & Nuisance Research Inst, Japan

Subject/Index Terms

• TRT Terms: Air quality management; Automobiles; Carburetors; Combustion; Engine idling; Engine tuning; Exhaust gases; Gasoline engines; Ignition; Maintenance; Motors; Retarders (Concrete); Spark gaps; Tests; Used vehicle industry
• Uncontrolled Terms: Distributors; Second hand
• Old TRIS Terms: Exhaust emission control; Retarders; Tuning
• ITRD Terms: 1327: Ignition; 3847: Maintenance; 1334: Motor; 9071: Second hand; 6255: Test
• Subject Areas: Highways; Maintenance and Preservation; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00163201
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: Analytic
• Files: ITRD, TRIS
• Created Date: May 18 1978 12:00AM