COMBUSTION METHOD OF INTERNAL COMBUSTION ENGINE

PROBLEM TO BE SOLVED: To improve energy saving and low pollution related to an internal combustion engine through lean and fine formation of injection fuel, an air mixing condition and a combustion chamber structure.SOLUTION: This invention constitutes a lean fuel injection nozzle in which a valve opening lift is made a little by making a large diameter and short length pin part of a pin-type injection nozzle for use in injecting fuel into a cylinder. A combustion method of an internal combustion engine in which lean injection flow of fuel is injected and struck against the large diameter and short length nozzle pin side surface part to make separation and fine formation as well as cylindrical expansion and development of a group of lean fuel due to its striking and reaction, air sucking flow is changed into a directive swirl flow form under a cooperative relation of combination of an intake valve and a valve seat and a valve opening lift, a nozzle in the cylinder and an ignition part are cooled, a complete combustion of various kinds of fuel is executed by an EFI system or a direct injection method through improvement of a fuel mixing and combustion condition and a high compression ratio is solved under three technical conditions on a thin and fine nozzle formation, a combustion chamber and a reinforcement of air mixing so as to perform a complete combustion. 【課題】内燃機関の省エネ低公害化を噴射燃料の微薄微細化と空気混合条件と燃焼室構造で改革する。【解決手段】気筒内に燃料を噴射するピン型噴射ノズルのピン部径を大きくし長さを短くして開弁リフトを微小とした微薄燃料噴射ノズルを構成し、微薄噴流を大径短長としたノズルピン側面部に噴射衝突せしめて衝突と反作用により円周状に微薄燃料群の分裂微細化と拡散展開を図り、空気吸入流れを吸気弁と弁座部の組合わせと開弁リフトとの相関により指向的スワ−ル流れ形態として気筒内ノズルや点火部の冷却を図り燃料混合燃焼条件の改善と高圧縮比化により多種多様な燃料の完全燃焼化をＥＦＩ方式や直噴方法で実行する内燃機関の燃焼方法をノズルの微薄微細化技術と燃焼室と空気混合強化との３技術条件で解決し完全燃焼とする。【選択図】図５