This paper introduces the characteristic of exhausted gas from lean-burn engine and reviews the technique of purifying NO_x under lean-burn condition(especially on HC-SCR).

For the LPG engine and the independent cylinder model based on the rotary coordinate system,the lean-burn control strategy using oxygen sensor was introduced.

By the experiment,the influences of engine speed,load,compression ratio,spark advance angle and spark-plug gap on lean-burn were analyzed.

Study on catalytic conversion for lean burn automobile exhaust gases;

It was found that the Cu/sepiolite catalyst has good anti-water and thermal stable properties under lean burn conditions.

A neural network-sliding mode control scheme was presented for accurately control of the air-fuel ratio for lean burn engine in transient condition.

Analysis of lean combustion system for vehicular engine;

This paper introduces lean combustion technology in non-uniform gas inlet and direct injection gasoline engine.

The lean combustion skill put a great future in the port fuel injection system.

AOD stainless steelmaking,BOF slag splashing,EAF coherent jet technology, high efficiency dilute oxygen combustion and BF hot oxygen coal injection,provided the customers through out the world with revolutionary solutions.

The coherent jet technology (Cojet? and dilute oxygen combustion technology (DOC), the Praxair s patented technologies, have been successfully applied in non-ferrous smelting.