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DIESEL-CNG
DUAL FUEL
SYSTEM
DUAL FUEL
SYSTEM
ODA Project
The diesel-natural gas mixture system uses natural gas for the main fuel and a small injection of diesel fuel as a source of ignition for the natural gas mixer by adding a gas supply system to the existing diesel engine.
The existing diesel engine system can be modified without significant changes, and the diesel mode can be changed from mixed mode during vehicle operation to diesel mode only by switch operation.
Features
- Can switch between diesel mode and mixed mode while driving
- When in diesel mode, operate in the same way as conventional diesel engines
- In mixed mode, both diesel and gas fuel are used at the same time (20-30% diesel fuel, 70-80% gas / depending on operating conditions)
- Start diesel mode and switch to mixed mode after reaching the coolant temperature setting
- Modifications can be made with the addition of natural gas fuel devices without modifying the engine mechanical part
Diesel-CNG Dual Fuel System 3D Modeling
Diesel-CNG Dual Fuel System Diagram
Performance Evaluation of Mixed Engine
Power Performance Test Results
| RPM | Base Engine | Diesel-LNG Engine | ||
|---|---|---|---|---|
| Base Engine | Diesel-LNG Engine | Base Engine | Diesel-LNG Engine | |
| 2000 | 58 | 277 | 59.1 | 277.2 |
| 2000 | 58 | 277 | 59.1 | 277.2 |
| 2000 | 58 | 277 | 59.1 | 277.2 |
| 2000 | 58 | 277 | 59.1 | 277.2 |
| 2000 | 58 | 277 | 59.1 | 277.2 |
Diesel-NG Dual fuel Engine Power & Torque performance
- Power and torque performance test confirmed that calibration was performed in the same way as the base engine.
- Max Power 64.5 kW @ 2400 rpm
- Torque 277.2 Nm @ 2000 rpm
Emission test results
| THC | CH4 | NMHC | CO | NOx | PM | BSFC (Diesel) | BSFC (LNG) |
|---|---|---|---|---|---|---|---|
| g/kWh | g/kWh | g/kWh | g/kWh | g/kWh | g/kWh | kg/kWh | kg/kWh |
| 6.88 | 5.48 | 1.80 | 0.32 | 0.00014 | 0.0267 | 0.0267 | 0.2709 |
Diesel-natural gas mixed engine exhaust gas performance (without ETC, C1-8 mode)
| THC | CH4 | NMHC | CO | NOx | PM | BSFC (Diesel) | BSFC (LNG) |
|---|---|---|---|---|---|---|---|
| g/kWh | g/kWh | g/kWh | g/kWh | g/kWh | g/kWh | kg/kWh | kg/kWh |
| 1.89 | 1.55 | 0.45 | 0.27 | 3.12 | 0.000000742 | 0.0341 | 0.2334 |
Diesel-natural gas mixed engine exhaust gas performance (ETC applied, C1-8 mode)
- Securing emission reduction performance through air-fuel ratio control using ETC
Colombia-Korea ODA Project Overview
- Business name Colombia's Old Diesel Commercial Vehicle Emission Reduction Device Improvement Supply Support Project
- Business period 2022 ~ 2023
-
Business purpose
- Contributing to local air quality improvement by installing emission reduction devices and CNG Converter Kit for old diesel commercial vehicles operating in Via Vivincensio, Colombia
- CNG Mixed Vehicle Mounting Logs in one's 250s
Micro Bus
Installation of structural change repair shop
Support for related maintenance equipment
road test
Vehicle delivery
Training and training of professional personnel
Key Parts
Installing the CNG Tank (50L*3EA=150L)
Throttle Body+ Mixer
shut off V/V
CNG Injector Rail
Dual Fuel ECU
Performance
- CNG Natural Gas Blends Up to 92%
- 19.8% reduction in fuel costs when mixing CNG compared to diesel (based on local CNG prices)
- Reduction of older diesel vehicle emissions by more than 90% (based on PM)
- CNG Converter Kit Installation
- Technical support for local personnel
- Colombia's Viavincensio Air Quality Improvements
- advanced technology transfer