ENGINE FEATURES [WLT-1, WLT-2, WL-3, WL-C, WE-C]

id010084100200

Mechanical

Improved engine performance

•  Coated pistons have been adopted (WL-C, WE-C)

•  Swirl type combustion chamber (WLT-1, WLT-2, WL-3)

•  DOHC with 4 valves per cylinder (WL-C, WE-C)

•  3 valves per cylinder (WLT-1, WLT-2, WL-3)

Reduced engine noise and vibration

•  An eight counter weight crankshaft has been adopted

•  A crankshaft pulley cover has been adopted (WL-C, WE-C)

•  An engine cover with insulator has been adopted (WL-C, WE-C)

•  Full-floating cylinder head cover mounting

•  Torsional damper pulley

Improved serviceability

•  An auto tensioner that automatically adjusts the timing belt tension has been adopted (WL-C, WE-C)

Improved design

•  An engine cover has been adopted (WL-C, WE-C)

Lubrication

Improved lubricity

•  Gear type oil pump adopted

•  Oil jet valves adopted

•  Water-cooled type oil cooler adopted

Reduced weight

•  Plastic oil strainer adopted

Reduced engine noise

•  Oil pan baffle plate adopted (WL-C, WE-C)

Cooling System

Reduced weight

•  Down flow type radiator with aluminum core and plastic tank adopted

Miniaturization

•  Built-in type water pump adopted

Reduced noise

•  Thermo-modulation type cooling fan adopted

Improved serviceability

•  Longer-life new engine coolant (type FL22) adopted

Intake air System

Power efficiency, performance, and fuel economy

• A variable geometry turbocharger has been adopted (WL-C, WE-C)

Improved emission gas purification

• Small size turbocharge has been adopted (WL-3)

Fuel System

Improved emission gas purification

• Electronic control type fuel injection pump adopted (WL-3, WL-C, WE-C)

Exhaust gas purification

• Common rail injection system adopted (WL-C, WE-C)

Emission System

Improved exhaust gas purification

•  EGR system adopted (WLT-2, WL-3, WL-C, WE-C)

•  EGR cooler adopted (WL-3, WL-C, WE-C)

•  Oxidation catalytic converter adopted (WLT-2, WL-3, WL-C, WE-C)

Improved reliability

•  Rollover valve adopted

Charging System

Improved reliability

• Generator with built-in battery sensing type IC regulator adopted

Starting System

Improved startability

• Reduction type starter adopted

Control System

Improved emission gas purification

•  Intake shutter valve control adopted (WL-C, WE-C)

•  Fuel injection control changed (WL-3, WL-C, WE-C)

•  EGR control adopted (WL-3, WL-C, WE-C)

Improved engine performance	• Coated pistons have been adopted (WL-C, WE-C) • Swirl type combustion chamber (WLT-1, WLT-2, WL-3) • DOHC with 4 valves per cylinder (WL-C, WE-C) • 3 valves per cylinder (WLT-1, WLT-2, WL-3)
Reduced engine noise and vibration	• An eight counter weight crankshaft has been adopted • A crankshaft pulley cover has been adopted (WL-C, WE-C) • An engine cover with insulator has been adopted (WL-C, WE-C) • Full-floating cylinder head cover mounting • Torsional damper pulley
Improved serviceability	• An auto tensioner that automatically adjusts the timing belt tension has been adopted (WL-C, WE-C)
Improved design	• An engine cover has been adopted (WL-C, WE-C)

Improved lubricity	• Gear type oil pump adopted • Oil jet valves adopted • Water-cooled type oil cooler adopted
Reduced weight	• Plastic oil strainer adopted
Reduced engine noise	• Oil pan baffle plate adopted (WL-C, WE-C)

Reduced weight	• Down flow type radiator with aluminum core and plastic tank adopted
Miniaturization	• Built-in type water pump adopted
Reduced noise	• Thermo-modulation type cooling fan adopted
Improved serviceability	• Longer-life new engine coolant (type FL22) adopted

Power efficiency, performance, and fuel economy	• A variable geometry turbocharger has been adopted (WL-C, WE-C)
Improved emission gas purification	• Small size turbocharge has been adopted (WL-3)

Improved emission gas purification	• Electronic control type fuel injection pump adopted (WL-3, WL-C, WE-C)
Exhaust gas purification	• Common rail injection system adopted (WL-C, WE-C)

Improved exhaust gas purification	• EGR system adopted (WLT-2, WL-3, WL-C, WE-C) • EGR cooler adopted (WL-3, WL-C, WE-C) • Oxidation catalytic converter adopted (WLT-2, WL-3, WL-C, WE-C)
Improved reliability	• Rollover valve adopted