CNG Engine Technology
CNG Engine Technology
We offer environment-friendly, cost-effective, reliable, and durable products to our customers.
Comprehensive CNG Solutions for Vehicles
Engine-level Components
- Engine Control Units (ECU)
- CNG injectors
- Fuel rail assembly
- Low-pressure filters
- Electronic throttle body
- Ignition coils
- Pressure & temperature sensors
- Oxygen (lambda) sensors
Chassis-level Components
- CNG high-pressure regulators
- High-pressure filters
- Filling Module & Filtration Delivery (FMFD)
- NGV filling valves
- NZS filling valves
- Solenoid valves
- Tubing & fittings
SQT CNG components are certified with respective domestic as well as international standards
ISO 15500
ECE 110
Electro-Magnetic Interference (EMI)
Electro-Magnetic Compatibility (EMC)
SQT CNG components are currently being used in high numbers by leading Indian OEMs.
Excellence in CNG Manufacturing & Precision Testing
SQT has a state-of-the-art manufacturing facility for ECU, CNG injectors, fuel rail, CNG pressure regulators, high-pressure and low-pressure fuel filters, FMFD, CNG filling valves, solenoid valves, tubing & fittings, etc. SQT has an in-house end-of-line components testing facility, level for each component, to ensure reliable performance and minimum part-to-part variation.
Our Engine Management System (EMS) software has all the latest industry-standard features and can be customized as per customer requirements.
Advanced SPFI Technology for CNG Fuel Systems
Benefits of SPFI Technology
- Low-cost solution
- Better homogeneity of air-fuel mixture
- Integrated system with minimal modification/adaption in the intake manifold
- Easy installation.
Limitations of SPFI Technology
- Poor vehicle pick-up or delayed response as fuel injection is far from the combustion chamber.
- Poor air-fuel ratio control during transient operation.
- Higher engine out emissions.
- Longer cranking duration.
- High tendency for backfire.
MPFI Technology
Multi-Point fuel injection system (MPFI), also known as Port Fuel Injection (PFI) or SGI (Sequential Gas Injection). It is the advanced and majorly used technology in CNG engines across applications such as passenger cars, light commercial vehicles, medium & heavy commercial vehicles. In MPFI, the fuel is injected into the intake port of the engine cylinder.
Benefits of MPFI Technology
- Precise air-fuel control during transient operation.
- Faster vehicle response and pick-up.
- Better fuel economy
- Lower engine out emission.
- Limited possibility of backfire.
- Better on-board diagnostic/monitoring of fuel injectors.
Challenges of MPFI Technology
- Relatively higher cost.
- Higher modification in the engine, particularly in the intake manifold.