Engines
Explore our comprehensive series of engines powered by gasoline, diesel, gas, and biogas—designed for efficiency, durability, and eco-friendly performance across diverse applications.
Comprehensive technical comparison of engines by fuel type, with detailed specifications and analysis:
1. Diesel Engines
Technical Parameters:
- Compression Ratio: 16:1–22:1
- Ignition: Compression ignition
- Thermal Efficiency: 35–45%
- Power Range: 50 kW–10 MW
Advantages:
- High torque output for heavy loads
- 20–30% better fuel economy than gasoline
- Long lifespan (B10 up to 1M km)
Disadvantages:
- High NOx/particulate emissions
- Noisy operation
- Poor cold-start performance
2. Gasoline Engines
Technical Parameters:
- Compression Ratio: 8:1–12:1
- Ignition: Spark plug
- Thermal Efficiency: 25–35%
- Power Range: 10 kW–500 kW
Advantages:
- High RPM capability
- Smooth and quiet operation
- Quick cold starts
Disadvantages:
- Lower fuel efficiency
- Limited torque at low RPM
- Higher CO₂ emissions
3. Natural Gas Engines (CNG/LNG)
Technical Parameters:
- Compression Ratio: 10:1–14:1
- Ignition: Spark or dual-fuel
- Thermal Efficiency: 30–40%
- Power Range: 50 kW–2 MW
Advantages:
- 20–30% lower CO₂ than diesel
- Low fuel cost (40–50% cheaper)
- Stable combustion
Disadvantages:
- Limited refueling infrastructure
- Lower energy density
- Large fuel storage required
4. Biogas Engines
Technical Parameters:
- Fuel Composition: 50–70% CH₄ + CO₂
- Compression Ratio: 12:1–16:1
- Thermal Efficiency: 28–38%
- Applications: Landfills, agriculture
Advantages:
- Carbon-neutral (renewable source)
- Waste utilization
- Low sulfur emissions
Disadvantages:
- Requires gas purification
- Low energy density
- Frequent maintenance
5. Hydrogen Engines
Technical Parameters:
- Combustion: Direct burn or fuel cell
- Energy Density: 120 MJ/kg (theoretical)
- Emissions: H₂O (NOx possible in burn mode)
- Power Range: 100 kW–1 MW (fuel cells)
Advantages:
- Zero CO₂ emissions (fuel cell)
- Fast refueling (3–5 mins)
- High efficiency (60% for fuel cells)
Disadvantages:
- Expensive storage tech
- Limited infrastructure
- Safety concerns (high-pressure H₂)
Diesel Engines and Other Engines Comparison Table
| Fuel Type | Thermal Eff. | Power Range | Emissions | Infrastructure |
|---|---|---|---|---|
| Diesel | 35–45% | 50 kW–10 MW | High (NOx/PM) | ★★★★★ |
| Gasoline | 25–35% | 10–500 kW | Medium (CO₂) | ★★★★★ |
| Natural Gas | 30–40% | 50 kW–2 MW | Low (CO₂) | ★★★☆☆ |
| Biogas | 28–38% | 10–500 kW | Carbon-neutral | ★★☆☆☆ |
| Hydrogen | 40–60%* | 100 kW–1 MW | Zero* | ★☆☆☆☆ |
Application Scenario Recommendations
- Long-haul Transport/Marine: Diesel engines (high torque and durability advantages)
- Passenger Vehicles: Gasoline engines/hydrogen fuel cells (balancing performance and environmental needs)
- Stationary Power Generation: Natural gas engines/biomass engines (low-cost and stable operation)
- Experimental Projects: Hydrogen fuel engines (zero-carbon potential, future technology direction)
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