Industrial Consultancy & Sponsored Research (IC&SR) , IIT Madras
Piezo-electric, Ultrasonic, Annular Surface Injection for Emission Reduction and Better Control in Engines
Categories for this Invention
Category – Advanced Fuel Injection Systems, Automobile & Transportation
Applications– Passenger Vehicles, Commercial Vehicles, Motorcycles and Scooters
Industry- Automotive, Engine Component Two-Wheeler Sector: Motorcycles, Scooters, Mopeds
Market – Automotive Fuel Injector Market is expected to reach an estimated $15.4 billion by 2030 with a CAGR of 5.8% from 2024 to 2030.
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Problem Statement
- Current ultrasonic and micro-nozzle fuel injectors often struggle with precise control over droplet size and spray penetration, especially at low pressures.
- Existing ultrasonic fuel injectors are often too large to be effectively integrated into small engines, limiting their application.
- There is a need for a more cost-effective and easily manufacturable injection system that can deliver precise atomization for diverse engine types and sizes.
Technology
- The invention employs piezoelectric ultrasonic multi-hole nozzles to achieve fine fuel droplet sizes (<10 microns), ensuring rapid vaporization and reducing wall film formation, leading to lower emissions and improved transient response.
- The system is electronically controlled, allowing precise fuel metering based on engine conditions, and eliminates the need for high-pressure fuel pumps, making it more efficient and suitable for small engines.
- The invention allows for both homogeneous and stratified combustion by strategically activating injectors around the air inlet pipe, optimizing fuel-air mixing for various engine loads and improving fuel economy.
Key Features / Value Proposition
Precise Fuel Metering:
- Electronic control of fuel injection based on engine conditions ensures accurate and efficient fuel usage.
Superior Atomization:
- Piezoelectric ultrasonic multi-hole nozzles produce fine droplets (<10 microns) for rapid vaporization and reduced emissions.
Enhanced Transient Response
- Close-proximity injection minimizes wall film formation, leading to quicker engine response and lower hydrocarbon emissions.
Pump-Free Operation:
- Gravity-fed fuel delivery eliminates the need for high-pressure pumps, reducing system complexity and power consumption
Versatile Combustion Modes:
- Capability to switch between homogeneous and stratified combustion improves fuel economy and engine performance across various loads.
Compact and Adaptable Design:
- Surface injectors with large injecting surfaces are easily integrated into small engines, offering a practical solution for diverse applications.
Questions about this Technology?
Contact For Licensing
sm-marketing@imail.iitm.ac.in
ipoffice2@iitm.ac.in
Research Lab
Prof. Anand T. N. C
Department of Mechanical Engineering
Intellectual Property
- IITM IDF Ref. 969
- IN 326643 – Patent Granted
Technology Readiness Level
TRL – 5
Technology validated in relevant environment.