What is one method to monitor the performance of LPG or CNG engines?

Utilizing onboard diagnostics to assess engine efficiency and emissions is a critical method for monitoring the performance of LPG or CNG engines. Onboard diagnostic systems are designed to continually monitor the engine's performance in real-time, providing valuable data about various parameters including fuel efficiency, emission levels, and overall engine health. This data is useful for identifying potential issues before they become major problems, thus ensuring that the engine operates within optimal parameters and adheres to environmental regulations. This proactive monitoring can lead to better maintenance schedules, improved performance, and reduced emissions which are particularly important for alternative fuel engines in meeting regulatory standards.

While regularly changing fuel filters is important for maintaining efficiency, it does not provide a direct measure of engine performance or emissions. Measuring the vehicle's speed, although useful for certain assessments, does not reflect overall engine condition or fuel efficiency. Traditional sound checks may offer some insights into engine operation but lack the precision and comprehensive data provided by onboard diagnostics.