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240 Landmarks TopGasoline and Natural Gas Engine > EA-71
 EA-71
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・ The features of this engine were the fine distribution of air-fuel mixture inherent to a horizontally-opposed engine, and lean combustion, which was enabled by preheating the engine with warm water and an improved carburetor.
・It controlled the maximum combustion temperature by reviewing the compression ratio and valve overlap, and precisely adjusting ignition timing.
・It achieved well balanced control of CO, HC, and NOx by controlling the combustion gas temperature from inside the combustion chamber to the exhaust path using a intake port liner and lead valve type secondary air induction system.
・In Oct. 1975, this SEEC-T system was installed in the Subaru Leone, enabling it to meet the emission gas regulations of 1976.
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Storage location:FUJI HEAVY INDUSTRIES LTD., SUBARU DEVELOPMENT AND ENGINEERING DIV. TECHNICAL ADMINISTRATION DIV., INFORMATION CENTER (10-1, Higashihon-cho, Ohta-shi, Gunma-ken 373-8555)
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Year manufactured:1975
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Manufacturer:Fuji Heavy Industries Ltd.
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Classification:Literature
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Current status:In storage: not open to the public
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Model / Manufacture
Model:EA71
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Type:Gasoline
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Company name:Fuji Heavy Industries Ltd.
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Familiar name:SEEC-T
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Installation model:Subaru Leone
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Year of manufacture:1975
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Designed by:Giichi Yamagishi (representative)
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Specification
Cylinder arrangement, number of cylinders:Horizontally opposed/4
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Cycle / cooling method:4/water-cooled
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Valve type / number:OHV (1/1)
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Combustion method:Spark ignition
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Combustion chamber:Bathtub
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Total displacement:1595 cc
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Bore x stroke:92×60 mm
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Compression ratio:8.5
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Mass (weight):92 kg
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Dimensions:432×685×635 mm
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Ignition system:Battery ignition
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Performance
Max. output:82/5600 ps/rpm
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Max. torque:12.0/3600 kgfm/rpm
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Rate of fuel consumption:225/2400 ( g/ps・h)/ rpm
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Device
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Features:・ It had a unique exhaust gas purifying system that did not require an after treatment system such as a catalyst or devices such as air pumps.
・The lead valve type secondary air induction system used exhaust pulses to introduce secondary air into the exhaust tube. The SEEC system had a simple, effective structure, and set the precedent for practical use of such systems, which later became widely used.
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Reference materials:・Nainen Kikan Vol. 14, No. 173, Dec. 1975
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