**4. Conclusions**

This study provides a comprehensive overview of hydrogen production techniques and fuel cell vehicle also described about the low-temperature combustion (LTC) techniques and how it is improve the reliability and fuel efficiency of the CI engine combustion cycle with low emissions and noise. The important findings are presented in this review can be summarized below:


*Zero Emission Hydrogen Fuelled Fuel Cell Vehicle and Advanced Strategy on Internal… DOI: http://dx.doi.org/10.5772/intechopen.102057*


Many experiments have extensively demonstrated that there is a wide and unexploited scope for improving low-temperature combustion using different fuel injection parameter and different reactive fuel injection. The overall study infers that depending on the operating condition, engine configuration parameters, fuel injection mechanism and fuel mixing method influenced more on the engine performance and emission characteristics. Hence, further research work will be needed to the trade-off between the NOx and soot emission with improvement in the engine performance.
