Spark-ignition internal combustion engine capable of preventing noxious gas emissions

Patent · Tue Sep 21 04:00:00 EDT 1982

OSTI ID:6951106

Hayashi, Y; Nagumo, S; Nakajima, Y; Yoshimura, T

An engine is provided with two spark plugs in each combustion chamber to ignite stoichiometric air-fuel mixture mixed with a large proportion of inert gases to lower nox emission level. The engine is equipped with hydraulic valve lifters which are mechanically connected to intake and exhaust valves to control the valve overlap of the intake and exhaust valves. By the action of the valve lifters, the valve overlaps are increased in the normal driving operation range of the engine to prevent discharge at the terminal stage of exhaust valve opening exhaust gases containing a considerably large amount of hydrocarbons.

• Assignee: Nissan Motor Co Ltd (Japan)
• Patent Number(s): US 4350129
• OSTI ID: 6951106
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330101* -- Internal Combustion Engines-- Spark-Ignition
330700 -- Advanced Propulsion Systems-- Emission Control
AIR FLOW
AIR POLLUTION CONTROL
CHALCOGENIDES
CONTROL
CONTROL EQUIPMENT
DESIGN
ENGINES
EQUIPMENT
EXHAUST GASES
FLOW REGULATORS
FLUID FLOW
FLUIDS
FUEL-AIR RATIO
GAS FLOW
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
SPARK IGNITION ENGINES
VALVES
WASTES