ENGINE FEATURES [LF, L3]

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On-Board Diagnostic


Improved engine performance	• KOEO/KOER self-test function has been adopted.
	• Pending code storage process has been changed.
	• MIL illumination conditions for the second drive cycle type have been changed.

Mechanical


Improved engine performance	• A variable valve timing mechanism has been adopted for the L3 engine model (2.3L).
Reduced engine weight	• Main parts (cylinder head and cylinder block) are made of aluminum alloy.
Reduced engine noise and vibration	• The cylinder head is made of aluminum alloy. • A cassette type balancer unit has been adopted for L3 engine model (2.3L). • A silent timing chain has been adopted. • A deep, skirt-type cylinder block has been adopted, composed of an integrated main bearing cap together with a ladder frame structure. • A crankshaft pulley with torsional damper has been adopted. • A pendulum type engine mount has been adopted.
Improved serviceability	• A serpentine type drive belt has been adopted. • Drive belt tension is adjusted automatically with an auto-tensioner. • A timing chain has been adopted to eliminate the need for its replacement. • An engine front cover with service hole has been adopted. (for unlocking the chain adjust ratchet, and securing the tensioner arm).

Lubrication System


Reduced weight	• An aluminum alloy oil pan has been adopted. • A plastic oil strainer has been adopted. • A resin oil filter cover has been adopted.
Improved lubrication and reliability	• A trochoid gear type oil pump has been adopted. • A water-cooled type oil cooler has been adopted. (For General (L.H.D. R.H.D.) specs.) • An oil jet valve has been adopted.

Cooling System


Reduced weight and size	• A cross-flow type radiator with radiator tanks made of plastic and a core made of aluminum • A stainless steel thermostat body is built into a plastic thermostat case. • A built-in type water pump has been adopted.
Reduce engine noise and vibration	• The cooling fan is a thermo modulator system type. • An electric cooling fan has been adopted.
Improved reliability	• A highly durable wax type thermostat has been adopted. • A water pump that is built into the cylinder block has been adopted.

Intake-air System


Improved engine performance	• Variable intake-air system (VIS) has been adopted to improve engine torque characteristics and combustion efficiency. (L3 engine)
Improved serviceability	• Nonadjustable IAC has been adopted.

Fuel System


System simplification	• Mechanical returnless fuel system has been adopted.
Weight reduction	• Resin fuel tank has been adopted.
Improved serviceability	• Quick release connectors have been adopted on all joints of fuel lines.

Charging System


Reduced size and system simplification	• A regulatorless generator with built-in power transistor has been adopted.

Ignition System


Improved marketability and durability	• Iridium spark plugs have been adopted.

Starting System


Improved reliability	• A coaxial-reduction type starter has been adopted.

Control System


System simplification	• Controller area network has been adopted.
Improved engine performance	• Variable air duct (VAD) control system has been adopted to improve engine performance at high engine speed. (L3 engine)
Improved engine performance	• Variable valve timing control system has been adopted to improve engine performance. (L3 engine)
Improved emission performance	• Variable valve timing control system has been adopted. (L3 engine)
	• Variable tumble control system (VTCS) has been adopted.
	• New fuel injection timing control has been adopted.
	• Manifold absolute pressure correction has been adopted to IAC control and fuel injection control.
Improved serviceability	• Nonadjustable ignition timing has been adopted.