This advanced technical course focuses on CNG engine fuel systems, specifically Sequential Port Fuel Injection (SPFI) and Multi-Point Fuel Injection (MPFI) technologies. Participants will gain deep understanding of electronic fuel management systems, injection timing, air-fuel ratio control, and emission optimization. The course covers system components, calibration techniques, diagnostic procedures, and performance tuning for CNG applications. Through technical analysis and practical exercises, attendees will develop expertise in optimizing CNG engine performance while maintaining emission compliance and fuel efficiency. This training is essential for engineers and technicians working with advanced CNG vehicle systems.
CNG Vehicle Engine Technology (SPFI & MPFI Systems)
Oil and Gas Technology
October 25, 2025
Introduction
Objectives
Upon completion of this course, participants will be able to:
- Understand SPFI and MPFI system principles and operation
- Diagnose and troubleshoot fuel injection system problems
- Calibrate electronic control units for optimal performance
- Optimize air-fuel ratios for different operating conditions
- Understand emission control systems and requirements
- Perform system upgrades and modifications
- Interpret diagnostic codes and sensor data
- Apply advanced tuning techniques for performance optimization
- Ensure compliance with emission standards
Target Audience
- Automotive engineers
- CNG system calibrators and tuners
- Diagnostic technicians
- Emissions specialists
- Research and development staff
- Quality assurance engineers
- Technical trainers
- Fleet maintenance supervisors
Methodology
- Hands-on calibration exercises
- Diagnostic tool practical sessions
- Case studies on emission compliance
- Performance tuning workshops
- System simulation exercises
- Technical data analysis exercises
- Troubleshooting scenario simulations
Personal Impact
- Enhanced understanding of fuel injection systems
- Improved diagnostic and troubleshooting skills
- Stronger calibration and tuning capabilities
- Increased confidence in emission system management
- Better analytical and data interpretation abilities
- Enhanced technical problem-solving skills
Organizational Impact
- Optimized engine performance and efficiency
- Improved emission compliance and reduced penalties
- Reduced diagnostic and repair time
- Enhanced vehicle reliability and customer satisfaction
- Better technical capability and competitive advantage
- Stronger compliance with regulatory requirements
Course Outline
Unit 1: Fuel Injection Fundamentals
System Principles- SPFI and MPFI system overview
- Injection timing and sequencing
- Fuel rail design and pressure management
- Injector types and characteristics
- ECU architecture and functions
- Sensor inputs and signal processing
- Actuator control and driver circuits
- Communication protocols and networks
Unit 2: System Components and Operation
Hardware Components- Injector specifications and selection
- Fuel pressure regulators
- Temperature and pressure sensors
- Throttle position and airflow sensors
- Cold start and warm-up strategies
- Transient operation compensation
- Altitude and temperature compensation
- Fault detection and management
Unit 3: Calibration and Tuning
Calibration Principles- Air-fuel ratio optimization
- Ignition timing calibration
- Injector flow rate characterization
- Load and speed-based mapping
- Performance tuning techniques
- Emission optimization strategies
- Fuel economy optimization
- Durability and reliability considerations
Unit 4: Diagnostic Techniques
Troubleshooting Methods- Diagnostic tool operation and interpretation
- Sensor and actuator testing
- Fuel system pressure analysis
- Emission system diagnostics
- Data logging and analysis techniques
- Performance trend analysis
- Emission data interpretation
- Root cause analysis methods
Unit 5: Emission Control Systems
Emission Technologies- Three-way catalyst systems
- Lambda control and oxygen sensors
- EGR systems for CNG applications
- On-board diagnostics requirements
- Emission standards and testing
- Certification requirements
- Periodic inspection procedures
- Recall and update management
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