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Isuzu 4HK1 Series High-Pressure Common-Rail Diesel Engine Assembly GH-4HK1 4HK1XKSC 4HK1-TC
Mechanical Specifications
| Parameter Item | Standard Specification / Detailed Data | Remarks |
|---|---|---|
| Engine Model | GH-4HK1 / 4HK1-TC / 4HK1-X | Includes truck and industrial/construction machinery versions |
| Cylinder Configuration | In-line 4-Cylinder (Inline 4) | 4-stroke, Single Overhead Camshaft (SOHC), 4 valves per cylinder |
| Displacement | 5.193 L (5193 cc) | Commonly referred to as the 5.2-liter engine in the industry |
| Bore × Stroke | 115 mm × 125 mm | Long-stroke design, optimized for high torque at low speeds |
| Compression Ratio | 17.5 : 1 | High compression ratio to ensure efficient diesel compression ignition |
| Aspiration Mode | Turbocharged & Intercooled | Certain high-spec models utilize a VNT (Variable Nozzle Turbo) |
Performance Specifications
| Parameter Item | Standard Specification / Detailed Data | Remarks |
|---|---|---|
| Rated Power | 140 kW ~ 154 kW (190 ~ 210 HP) | Rated speed is typically between 2100 ~ 2400 RPM |
| Peak Torque | 513 N·m ~ 637 N·m | Peak torque is achieved within the 1500 ~ 1600 RPM range |
| Idling Speed Range | Approx. 1000 RPM (High) / Approx. 750 RPM (Low) | Slightly adjusted based on truck or excavator applications |
| Direction of Rotation | Counter-clockwise (as viewed from the flywheel end) | Standard rotation direction for commercial vehicles and machinery |
Fuel & Electrical Control Specifications
| Parameter Item | Standard Specification / Detailed Data | Remarks |
|---|---|---|
| Fuel Injection System | High-Pressure Common Rail Direct Injection | Core system components are supplied by DENSO (HP3/HP4) |
| Max Common Rail Pressure | Up to 1600 bar ~ 1800 bar | Ultra-high pressure injection for fine fuel atomization and low emissions |
| Electrical System Voltage | 24 V (12V options available for specific industrial models) | 24V starting system is the standard for trucks and large excavators |
| Alternator Output | 24V - 50A (or 24V - 60A) | Sufficient to power the vehicle/machinery electrical systems |
| Starter Motor Power | 24V - 4.5 kW ~ 5.0 kW | Ensures reliable starting under cold weather and high viscosity oil |
Maintenance & Capacity Specifications
| Parameter Item | Standard Specification / Detailed Data | Remarks |
|---|---|---|
| Total Oil Capacity | Approx. 13 L ~ 18 L | Excavators use steep-angle oil pans, which have larger capacities |
| Standard Service Interval | 500 Hours or 10,000 ~ 15,000 km | Dependent on actual fuel quality and operating conditions |
| Coolant Capacity | Approx. 12 L ~ 14 L | Engine block capacity only, excluding external radiator volume |
| Fuel Quality Requirement | Ultra-low sulfur automotive diesel (Cetane Number ≥ 45) | Strongly recommended to use compliant and clean fuel |
Physical & Logistics Specifications
| Parameter Item | Standard Specification / Detailed Data | Remarks |
|---|---|---|
| Engine Dry Weight | Approx. 480 kg | Excludes liquids and external accessories (durable cast-iron block/head) |
| Dimensions (L × W × H) | Approx. 983 mm × 810 mm × 908 mm | Approximate bare engine size; varies based on accessory configurations |
| Packed Gross Weight | Approx. 530 kg ~ 560 kg | Includes the weight of the export fumigated wooden case or steel pallet |
| Export Logistics Volume | Approx. 1.2 m³ ~ 1.4 m³ | Standard volume calculation for international shipping containers |
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