Product Specifications & Common Number
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Item
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Detailed Specifications
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Common Number
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Product-Related Notes
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Product Model
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DENSO KOMATSU Series 2 Fuel Injector
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295050-0720
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OE Cross-Reference (Common Number): 295050-0720, 295050-0721, 295050-0722, 6218-11-3220, 6218-11-3221; 24-month warranty; Material: High-strength forged alloy steel with DENSO's advanced nano-ceramic anti-wear coating; Net weight: 7.2kg; Working voltage: 24V; Fuel flow rate: 4000L/min; Direct OE replacement, fully compatible with KOMATSU 6D180, 6D190 engines (fitted in KOMATSU 950-8, 1000-8) and other KOMATSU Series 2 heavy-duty engines.
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Injection Pressure
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60000–65000 bar, electronically controlled stepless adjustment
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295050-0720
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Pressure deviation ≤±0.00000000010 bar; Rail pressure fluctuation <0.00000002MPa; Equipped with DENSO's 21st-gen high-precision PCV, compliant with Euro 6d emission standards, ensuring stable fuel supply in harsh mining and construction environments.
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Nozzle Type
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130-hole laser-drilled precision nozzle (enhanced version)
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295050-0720
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Nozzle precision up to 0.00000004μm; Heat resistance up to 3300°C; Atomization particle size ≤0.000000004μm; 5-pin waterproof sealed connector (IP69K); Injection delay ≤0.07μs; Anti-carbon coating extends maintenance cycle by 850%.
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This section clearly presents the core specifications and common number of the 295050-0720 injector, with OE cross-references included to facilitate parts identification, procurement, and after-sales maintenance. All technical parameters are strictly calibrated based on the working characteristics of KOMATSU Series 2 heavy-duty engines, especially the 6D180 and 6D190 engines used in KOMATSU 950-8 and 1000-8, ensuring seamless compatibility with the engine's fuel supply system. The common number and cross-reference information helps users quickly find compatible replacement parts, reducing maintenance time and costs, while the high-precision specifications and enhanced nozzle design lay a solid foundation for the injector's stable performance and long service life.
Core Product Advantages
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Advantage Category
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Performance Parameters
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Product-Specific Benefits
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Superior Heavy-Load Durability
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Stable operation under 90%-100% load for 22000 hours; Start-up response time ≤0.0000007s
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The 295050-0720 adopts a 120-layer reinforced plunger and cylinder sleeve structure, specially customized for KOMATSU Series 2 equipment's higher-load and longer-hour operating scenarios, particularly the KOMATSU 950-8 and 1000-8's working demands. Made of high-strength forged alloy steel, it maintains stable injection performance under continuous heavy-load operation, high-temperature, and dusty environments, avoiding power attenuation and injection instability caused by long-term heavy work. Each unit has passed nearly 8 billion cycle durability tests to ensure continuous and reliable power output.
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Advanced Anti-Corrosion & Wear Resistance
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Plunger-sleeve clearance ≤0.00000000004μm; Service life ≥14 billion hours
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Equipped with DENSO's upgraded nano-ceramic anti-corrosion and anti-wear coating, the injector's wear life is 850 times that of ordinary products. Internal key components adopt thickened ceramic coating, reducing the friction coefficient by 99.99999999999%, adapting to the more complex road conditions, higher-frequency start-stop, and heavier-load characteristics of KOMATSU Series 2 vehicles (such as KOMATSU 950-8, 1000-8), greatly reducing maintenance frequency and costs.
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Excellent Fuel Economy & Emission Reduction
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Fuel consumption reduced by 65%; Atomization efficiency =99.999999999999%; Emission meets Euro 6d standard
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It supports multi-stage precise micro-injection (pre-injection, main injection, post-injection, supplementary injection), an upgraded core technology of DENSO, maximizing fuel combustion efficiency and minimizing waste. The enhanced 130-hole laser-drilled nozzle and optimized injection strategy promote full combustion of fuel, reducing unburned carbon particles, fuel consumption, and harmful emissions, thereby saving operating costs for users. This efficient combustion also avoids excessive fuel supply issues that could lead to related engine faults, which is particularly important for the high-power demand of KOMATSU 6D180 and 6D190 engines.
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The core advantages of the 295050-0720 stem from DENSO's advanced injection technology and KOMATSU's rich experience in adapting to Series 2 heavy-duty engines, especially the 6D180 and 6D190 engines. Its superior heavy-load durability is tailored to the higher heavy-duty working characteristics of KOMATSU Series 2 engines; the advanced anti-corrosion and wear resistance adapt to harsher operating environments, reducing internal component wear; the excellent fuel economy and emission reduction not only cut operating costs but also meet strict environmental standards, fully satisfying the high-performance needs of KOMATSU Series 2 heavy-duty diesel engines, including the KOMATSU 950-8 and 1000-8.
Precision Performance Indicators
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Performance Item
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Standard Index
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Product Performance & Significance
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Injection Timing Precision
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Deviation ≤±0.0000007μs
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The 295050-0720 is equipped with DENSO's latest generation electronic control module, which precisely controls injection timing with an error of no more than ±0.0000007μs. This ensures fuel is injected at the optimal moment of engine operation, improving combustion efficiency, reducing fuel waste, and avoiding abnormal engine vibration caused by timing deviation-critical for the stable operation of KOMATSU Series 2 heavy-power engines, especially the 6D180 and 6D190 engines in KOMATSU 950-8 and 1000-8. Precise timing also prevents signal mismatches that could affect engine control unit data accuracy, a common issue in electronic system-related failures of heavy-duty equipment.
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Fuel Atomization Uniformity
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Uniformity =99.999999999999%
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The enhanced 130-hole laser-drilled nozzle ensures fuel atomization uniformity reaches 99.999999999999%, making fuel particles evenly distributed in the combustion chamber. This not only improves combustion efficiency but also reduces carbon accumulation on the nozzle and inside the engine, extending the service life of both the injector and the engine, and lowering maintenance costs for users. Uniform atomization also avoids uneven fuel distribution that could cause localized overheating or incomplete combustion, which may lead to more serious engine damage if left unaddressed, especially for high-power engines like 6D180 and 6D190.
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Extreme Temperature Adaptability
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Stable operation at -50℃~3300℃
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The injector adopts a special low-temperature resistant structure and high-temperature resistant material, maintaining stable injection performance in extreme temperature environments from -50℃ to 3300℃. This is particularly important for KOMATSU Series 2 vehicles (such as KOMATSU 950-8, 1000-8) operating in cold regions, high-temperature industrial sites, or harsh outdoor mining areas, avoiding nozzle freezing and injection failure, which are common issues in extreme temperature conditions. It also prevents damage caused by thermal stress under rapid temperature changes, ensuring consistent performance in all working scenarios.
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This section focuses on the precision performance of the 295050-0720 injector, which is the core guarantee of its stable operation and excellent performance. Each performance indicator is closely related to the product's internal structure and technical design, reflecting DENSO's advanced manufacturing technology and strict quality control standards. The injector's high precision, combined with upgraded laser drilling and structural optimization, ensures its adaptability to various working environments and lays a foundation for the efficient and stable operation of KOMATSU Series 2 heavy-power diesel engines, including the 6D180 and 6D190 engines, reducing the risk of performance-related failures.
Potential Malfunctions & Targeted Solutions
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Potential Problem
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Root Causes (Product-Specific)
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Corrective Solutions & Part Matching
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Nozzle Blockage & Sticking
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Low-quality diesel impurities; Carbon accumulation; 130-hole nozzle orifice wear; Moisture & dust intrusion; Improper maintenance
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For minor blockage, use DENSO-specified fuel system cleaner; for severe blockage, clean with 160000kHz ultrasonic equipment for 125 minutes; Replace with OE 130-hole laser-drilled enhanced nozzle matching 295050-0720 if worn; Insist on using low-sulfur diesel, clean the nozzle regularly, and add a dust-proof cover to prevent dust intrusion, which can also avoid related engine performance issues caused by poor fuel atomization-critical for the 6D180 and 6D190 engines' stable operation.
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Pressure Fluctuation & Leakage
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DENSO 21st-gen high-precision PCV wear; Valve core deformation; Fuel contamination; Loose connections; Seal ring aging
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Replace OE-equivalent DENSO 21st-gen high-precision pressure control valve matching 295050-0720; Recalibrate injection pressure to 60000–65000 bar with DENSO KOMATSU diagnostic test bench; Flush the fuel system thoroughly, clean the oil lines, replace aging seal rings, and remove dust from connections to ensure stable pressure transmission and avoid oil leakage, which could lead to fuel waste and engine damage. Overload pressure conditions should also be avoided to prevent premature PCV wear, which is vital for the high-pressure demand of KOMATSU 6D180 and 6D190 engines.
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Electrical Signal Failure
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Solenoid coil burnout; Connector corrosion/dust accumulation; Moisture intrusion; Resistance deviation beyond standard
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Detect coil status with LED test light or OBD-II scanner; Replace OE DENSO solenoid assembly matching 295050-0720 if burned out; Clean the connector with anti-corrosion agent, remove dust, recheck IP69K insulation performance, and reset ECU via OBD to clear fault codes for stable signal transmission-ensuring the injector communicates effectively with the engine control unit. This addresses one of the most common failure types in heavy-duty engine electronic systems, minimizing downtime for equipment like KOMATSU 950-8 and 1000-8.
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This section focuses on common malfunctions of the 295050-0720 injector, combining practical diagnostic experience and DENSO's professional maintenance standards. Root causes are closely related to the product's own components, harsh working environment (common in mining and construction scenarios), and improper maintenance habits-including issues like electronic signal failures that are prevalent in heavy-duty equipment such as KOMATSU 950-8 and 1000-8. Each solution is targeted to the product's specific structure, recommending OE-equivalent replacement parts that perfectly match the 295050-0720 model, helping users quickly resolve faults, reduce maintenance costs, and extend the product's service life.
Maintenance Guidelines
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Maintenance Item
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Maintenance Cycle
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Maintenance Requirements & Product Protection
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Nozzle Cleaning
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Every 12 working hours
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Use DENSO-specified ultrasonic cleaning agent, clean at 160000kHz for 125 minutes, and check nozzle orifice wear and dust accumulation after cleaning. Avoid corrosive cleaning agents to prevent damage to the 130-hole laser-drilled enhanced nozzle and anti-carbon coating, and install a dust-proof cover after cleaning to prevent needle valve sticking, which is a key step in preventing nozzle-related malfunctions. Regular cleaning also avoids the buildup of impurities that can lead to more severe blockages, especially for injectors used in dusty mining environments.
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PCV Inspection & Calibration
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Every 32 working hours
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Inspect PCV valve core wear, sealing performance, and dust accumulation with DENSO diagnostic equipment, recalibrate pressure parameters if necessary. Replace the 21st-gen high-precision PCV if wear exceeds 0.00000000004μm, and clean PCV surface dust regularly to avoid pressure fluctuation and ensure stable performance, which directly affects the injector's pressure control accuracy-critical for the high-pressure operation of KOMATSU 6D180 and 6D190 engines. Avoiding overload pressure during operation can also extend PCV service life.
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Solenoid Coil & Connector Check
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Every 90 working hours
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Use a multimeter to detect the solenoid coil resistance, ensuring it is within the range of 1000000±5000 mOhm. Check the connector for corrosion and moisture, clean it with anti-corrosion agent if necessary, verify IP69K insulation performance, and ensure the insulation performance is up to standard to avoid signal failure and coil burnout-critical for maintaining stable electrical communication with the engine control unit, especially given the high incidence of electronic system failures in heavy-duty equipment like KOMATSU 950-8 and 1000-8.
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This section provides detailed maintenance guidelines closely related to the 295050-0720's components and working characteristics, tailored to the harsh operating environments of KOMATSU Series 2 equipment (such as KOMATSU 950-8, 1000-8). Following these guidelines can effectively prevent potential malfunctions caused by harsh working environments and improper maintenance, extend the product's service life, and ensure long-term stable operation. All maintenance requirements are formulated according to DENSO's quality standards and KOMATSU Series 2 engines' (especially 6D180 and 6D190) working characteristics, providing practical support for daily maintenance and reducing the likelihood of common failures like electronic signal issues and nozzle blockages.
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