Comparison between lean burn and Rich Burn engines
Comparison between lean burn and Rich Burn engines:- After certain emission calibration levels Lean‐burn gas engines are more economical and these can even operate at higher loads, But in rich‐burn engines have lower emission levels with a single after treatment these are more tolerant of broad fuel ranges and ambient conditions, and generally have better transient load capability. Principle of operation of Rich Burn engines:- Rich‐burn engines operate at principle of stoichiometric air/fuel ratio (AFR) according to this principle air in exact quantity is supplied to burn all of the fuel. This will leads to reduction in nitrogen oxides (NOx), carbon monoxide (CO), hydrocarbons (HC), and HAPS (Hazardous Air Pollutants) after certain treatment for all in one i.e. by using catalytic converter used in cars. Lean burn engines working principle:- In these engines Lean‐burn engines use a lot of excess air. These engines take up to twice the amount needed in rich burn engines for c...