Noise Reduction Low NOx Emissions CNG Generator Set

Shandong Kecheng Electric Power Equipment Co., Ltd. is a certified Manufacturer and Exporter of the Noise Reduction Low NOx Emissions CNG Generator Set (ISO9001-2000, ISO14001). The data below is derived directly from our 100-1000kW production line and field installations.

Noise Reduction Engineering

Double-Layer Soundproof Enclosure

• Inner layer: High-density sound-absorbing cotton – reduces noise by 20dB.
• Outer layer: Cold-rolled steel plate with anti-rust coating – durable for outdoor installation.
• Result: Operating noise ≤85 dB at 1 meter (no-load), ≤88 dB at full load – suitable for hospitals, hotels, and commercial complexes.
• Enclosure includes ventilation ducts with silencers to maintain cooling while blocking noise.

Low-Noise Components

• Resonance-dampened engine mounts (reduce vibration transmission).
• Exhaust silencer (critical grade) included as standard.
• Optional super-silent enclosure for sub-80dB requirements.

Ideal for Noise-Sensitive & Emission-Regulated Sites

Hospitals, hotels, data centers, and residential areas require backup power that does not disturb operations or violate air quality standards. The Noise Reduction Low NOx Emissions CNG Generator Set solves both challenges with factory-engineered acoustic treatment and lean-burn combustion technology.

Key Differentiators vs. Standard Gas Generators

Technical Specifications (100kW – 1000kW Models)

Core Parameters 

Low NOx Emissions Technology

Electronically Controlled Lean-Burn Combustion

• Air-fuel ratio: Precisely maintained at 15:1 to 17:1 via multi-point injection.
• High compression ratio: 10:1 to 12:1, enhancing thermal efficiency (40-48%) while lowering peak combustion temperature.
• NOx reduction mechanism: Lower peak flame temperature reduces thermal NOx formation – verified to ≤300 mg/m³.
• CO control: Complete combustion keeps CO ≤100 mg/m³, exceeding many local standards.

Comparison: CNG Generator vs. Diesel Unit 

Fuel Flexibility: CNG / Pipeline Gas / LNG

The Noise Reduction Low NOx Emissions CNG Generator Set accepts natural gas with calorific value between 32-40 MJ/m³. No hardware modification is required to switch between:

• CNG (Compressed Natural Gas): Ideal for sites without pipeline access. Cylinder cascade connection supported.
• Pipeline natural gas: Direct connection to utility gas lines.
• LNG (Liquefied Natural Gas): Vaporized before intake – fully compatible.

The ECU automatically adjusts ignition timing and injection duration to maintain stable output (voltage regulation ≤±1%, frequency stability ≤±0.5%) regardless of fuel source variation.

Intelligent Control & Remote Monitoring

PLC Control System

• Monitors 20+ parameters: rotational speed, oil pressure, water temperature, voltage, exhaust temperature, fuel pressure.
• Fault handling: Automatic shutdown alarm + storage of 100 fault records with timestamp.
• Operation modes: “Automatic/Manual” dual mode – automatic mode supports timed startup and remote trigger.
• Remote monitoring: Optional APP monitoring (reduces manual attendance).

Protection Features

• IP23 electrical protection (dust-proof + water-proof) – suitable for outdoor canopies.
• Auto load shedding if oil temperature exceeds 115°C or coolant exceeds 95°C.
• Pre-start self-check: battery voltage, fuel pressure, and coolant level.

Operational & Maintenance Guidelines

Pre-Startup Checklist 

• Fuel system: Pressure 0.1-0.3 MPa; soap water test for leaks; filter not clogged.
• Lubrication system: Oil level between MAX-MIN marks; use low-ash gas engine oil (sulfated ash ≤0.5%), viscosity 15W-40 for -10°C to 20°C.
• Cooling system: Coolant at fill line; 50% antifreeze for -20°C environments.
• Electrical system: 12V models ≥12.5V / 24V models ≥25V; output switch off.

Startup & Shutdown Protocol

• Select “Automatic” or “manual” mode → start → increase speed to 1500r/min, oil pressure to ≥0.3MPa, water temperature to 80°C (3-5 min warm-up).
• Loading: close output switch → first load ≤50% (run 30 min) → gradually increase to full load.
• Shutdown: reduce load to 0 → disconnect generator output → idle run 3-5 min (cool-down) → press “Stop” → close natural gas valve → disconnect control power.

Maintenance Schedule (Based on Kecheng’s 5,000+ annual production experience)

• Daily: Clean outer cover / radiator dust.
• Weekly: Check fuel/oil filters (replace if clogged).
• Monthly: Check drive belt (replace if deflection >15mm or aged).
• Every 500 hours: Change engine oil + oil filter.
• Every 1000 hours: Change air + fuel filters.
• Every 2000 hours: Adjust valve clearance + replace spark plugs/ignition electrodes.

Common Fault Handling

Certifications & Company Background

Registered capital: 18 million CNY. Certifications include ISO9001-2000 International Quality Management System and ISO14001 Environmental Management System. Our products range from 20kW to 3000kW, with annual production capacity exceeding 5,000 units.

Key customers include China Construction First Group, China Railway Eighth Group, Beijing Urban Construction Group, and CCCC First Highway Engineering Bureau – demonstrating proven reliability in infrastructure and commercial projects.

Frequently Asked Questions (FAQ)

Thermal efficiency ranges from 40% to 48%, which is 5-8% higher than standard gas generators. With waste heat recovery (optional), comprehensive utilization exceeds 90%.

Ready to Upgrade to Silent, Low-Emission Power?

Kecheng delivers factory-direct Noise Reduction Low NOx Emissions CNG Generator Sets. Our units are operating in chemical plants, data centers, hotels, and hospitals across China and Southeast Asia – proven for noise compliance and emission standards.