Chery SQR484F ACTECO 2.0L Naturally Aspirated Engine Without VVT

Chery SQR484F (1st-Generation ACTECO 2.0L Naturally Aspirated Engine without VVT)

I. Meaning of

Model Designation SQR: Factory prefix for all Chery engines 4: Inline four-cylinder layout 84: Cylinder bore of 84 mm F: Base first-generation variant without variable valve timing (VVT); DVVT was added on the later upgraded SQR484FVVT Differentiation of 2.0L Derivatives on the Same Platform SQR484F: Original base 2.0L without VVT (first mass-produced unit with conservative technical layout) SQR484FVVT: Mid-cycle facelift model equipped with intake & exhaust DVVT SQR484B: High-spec version with enhanced DVVT and comprehensively upgraded power & torque SQR484J: High-end high-performance calibrated variant

II. Basic Hardware Specifications (Core Feature: No VVT Mechanism)

Displacement: 1971 mL (2.0 L), inline four-cylinder, water-cooled four-stroke Bore × Stroke: 84 mm × 90 mm Compression Ratio: 10.2:1 Valve Train: DOHC dual overhead camshaft, 16 valves; no intake/exhaust variable valve timing mechanism Engine Construction: Cast iron cylinder block + aluminum cylinder head Timing System: Timing belt (mandatory full replacement at 60,000 km; broken belt will bend engine valves) Valve Actuation: Hydraulic tappets without VVT adjustment assembly Engine Oil Capacity: Approx. 4.5 L Net Engine Weight: 147 kg Emission Standard: China National IV / Euro IV Fuel Requirement: 92# or higher octane gasoline

III. Core Power Calibration Parameters (Factory Calibration for Non-VVT Version)

Rated Maximum Power: 102 kW / 139 hp @ 5750 rpm Peak Torque: 182 N·m @ 4300–4500 rpm Specific Power: 51.7 kW/L Minimum Fuel Consumption Rate: 275 g/kW·h Fuel Consumption Reference Constant-speed fuel consumption at 60 km/h: 5.4 L/100km Combined urban fuel consumption: 8.5–10 L/100km Steady high-speed fuel consumption: 7.0–7.8 L/100km

IV. Core Technical Characteristics (Advantages & Drawbacks Caused by Absence of VVT)

Fundamental Advantages Co-developed with AVL as the first-generation ACTECO engine; simple mechanical structure, affordable spare parts and low failure rate Port injection design generates almost no carbon deposits in intake ports, minimizing maintenance hassle for short-distance commuting Cast iron cylinder block delivers high structural strength and outstanding durability; numerous overhaul-free cases over 100,0000 kilometers Loose requirements for engine oil quality; mineral oil or semi-synthetic oil are both acceptable Obvious Disadvantages Due to Lack of VVT Weak low-end torque; peak torque only available above 4300 rpm, resulting in sluggish low-speed performance in urban traffic and severe power loss under full load or with air conditioning activated Unable to optimize valve overlap at high and low RPMs, leading to higher high-speed fuel consumption and inferior fuel economy compared with DVVT-equipped SQR484FVVT Sluggish power output during takeoff and climbing; mediocre reserve power for high-speed overtaking Average idle smoothness with more noticeable vibration at low RPM than the DVVT variant

V. Core Differences vs. VVT-equipped SQR484FVVT

SQR484F (No VVT)

SQR484FVVT (With DVVT)

Variable Valve Mechanism No DVVT Dual VVT for intake and exhaust Peak Torque 182 N·m @ 4300–4500 rpm 187 N·m @ 3800–4200 rpm Low-speed Torque Performance Sluggish at low RPM Significantly improved low-rev torque Combined Fuel Consumption Higher Reduced by 0.6–0.8 L/100km Production Cost Lower Extra cost for VVT actuators and solenoid valves Production Years Early models 2006–2012 Facelift models after 2012

VI. Vehicle Models Equipped (Only Early Non-VVT Version)

Chery Sedans Eastar A5, Chery V5, Early Chery A3 2.0, Chery A5 2.0 SUVs Early batches of first-gen Tiggo 3 2.0, entry-level old version of first-gen Tiggo 5 2.0 Sub-brands Early entry-level Riich G5/G6, First-gen Kaiyi X5 2.0L Matching Transmissions 5-speed manual QR519MHA, 4-speed automatic transmission (4AT)

VII. Maintenance & Vehicle Operation Precautions

Engine Oil Specification: 5W-30 mineral oil as minimum standard; semi-synthetic or full-synthetic oil are optional Timing Belt: Full kit replacement (belt + tensioner + idler pulley) is mandatory at 60,000 km. A snapped belt will bend valves and incur extremely high repair costs Maintenance Interval: 5,000 km or 6 months (whichever comes first); initial maintenance at 3,000 km Consumable Replacement Cycle: Spark plugs replaced every 30,000 km; throttle valve cleaned every 20,000–30,000 km Driving Suggestions: Maintain higher RPM to sustain power during climbing or full-load driving; steady cruising at high speeds achieves better fuel efficiency; not suitable for frequent short trips in congested traffic Translation Norms Automotive abbreviations: VVT, DVVT, DOHC, MPI, 4AT retain global industry standard abbreviations Vehicle series names: Eastar, Tiggo, Riich, Kaiyi adopt Chery official English naming standards Units: kW, hp, N·m, rpm, L/100km, mm, kg follow international unified symbols Emission standards: China National IV / Euro IV use standard automotive industry translations