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Reciprocating internal combustion engine
Circle L engine
Overview
Manufacturer
GM Powertrain Poland
Layout
Configuration
Inline-4
Displacement
1.7 L; 102.9 cu in (1,686 cc)
Cylinder bore
79 mm (3.11 in)
Piston stroke
86 mm (3.39 in)
Cylinder head material
Aluminium alloy
Valvetrain
DOHC
Compression ratio
16.5:1, 18.2:1, 18.4:1
Combustion
Turbocharger
Mitsubishi TD025 variable-geometry
Fuel system
Common rail direct injection
Management
Denso or Bosch
Fuel type
Diesel
Oil system
Wet sump
Cooling system
Water-cooled
Output
Power output
65–130 PS (48–96 kW)
Torque output
130–300 N⋅m (96–221 lb⋅ft)
Emissions
Emissions target standard
Euro 3, 4 & 5
Emissions control systems
EGR
Chronology
Successor
MDE engine
The Circle L is an automobile engine produced by GM Powertrain Poland in Poland. It is a 1.7 L; 102.9 cu in (1,686 cc) inline-four 16-valve turbocharged diesel engine originally designed by Isuzu but now owned by General Motors. The engine was produced in Europe by General Motors for use in the Opel, Vauxhall and Chevrolet vehicles and by Honda for use in the Civic compact car.
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