ENGINE UNIT GENERAL


  1. OUTLINE


    1. The 1KR-FE engine is a DOHC 12-valve, 1.0-liter, in-line 3-cylinder power unit.

    2. This engine uses the DIS (Direct Ignition System), VVT-i (Variable Valve Timing-intelligent) system and ETCS-i (Electronic Throttle Control System-intelligent). It has been developed to realize high performance, quietness, fuel economy and clean emission.

      A0116O0

  2. SPECIFICATION

    Engine Type 1KR-FE
    No. of Cyls. & Arrangement 3-cylinder, In-line
    Valve Mechanism 12-valve DOHC, Chain Drive (with VVT-i)
    Combustion Chamber Pentroof Type
    Manifolds Cross-flow
    Fuel System SFI
    Ignition System DIS
    Displacement

    998 cm3(60.9 cu. in.)
    Bore x Stroke 71.0 mm x 84.0 mm (2.8 in x 3.3 in)
    Compression Ratio 10.5 : 1
    Max. Output [EEC] 50 kW @ 6000 rpm
    Max. Torque [EEC] 91 N*m@ 4800 rpm
    Valve Timing Intake Open 40° BTDC - 5° ATDC
    Close 10° ABDC - 55° ABDC
    Exhaust Open 40° BBDC
    Close 2° ATDC
    Firing Order 1-2-3
    Fuel Unleaded Gasoline
    Research Octane Number 95 or higher
    Oil Grade API grade SL, SM, SL "Energy-Conserving", SM "Energy-Conserving" or ILSAC
    Emission Regulation EURO IV
    Engine Service Mass* (Reference) 67kg (147.7 lb)

    Tech Tips

    *: The indicated weight includes only the engine with the flywheel, except the generator, starter, cooler compressor, engine oil, coolant and clutch.

    A0116RZE01

  3. MAIN FEATURES


    1. The 1KR-FE engine has achieved the following performance through the adoption of the items listed below.


      1. High performance and reliability

      2. Low noise and vibration

      3. Lightweight and compact design

      4. Good serviceability

      5. Clean emission and fuel economy

        Section Item (1) (2) (3) (4) (5)
        Engine Proper A cylinder head cover made of plastic is used. ○
        A resin coating and micro-grooves are used in the skirt portion of the piston. ○ ○
        Low-tension piston rings are used. ○ ○
        Oil strainer made of plastic is used. ○
        Spiny liners are used. ○
        Cylinder block water jacket spacer is used ○
        Valve Mechanism A shimless type valve lifters are used. ○
        The VVT-i system is used. ○ ○
        A timing chain and chain tensioner are used. ○ ○ ○
        Intake and Exhaust System Intake manifold made of plastic is used. ○
        A stainless steel exhaust manifold is used. ○ ○
        A linkless type throttle body is used. ○ ○ ○
        Emission Control System A step motor type EGR valve is used. ○
        Fuel System A fuel delivery pipe made of pressed steel is used. ○ ○
        A fuel returnless system is used. ○ ○
        4-hole type fuel injectors with a high atomizing performance are used. ○ ○
        Ignition System The long-reach type spark plugs are used. ○
        The DIS (Direct Ignition System) makes ignition timing adjustment unnecessary. ○ ○ ○ ○
        Engine Control System The flat type knock sensor is used. ○
        The vacuum sensor and the intake air temperature sensor are integrated. ○
        Engine Mounting The electrical hydraulic type engine mounting is used ○