CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE

To suppress the discharge of microparticulate matters.SOLUTION: On a top surface of a main combustion chamber (2), a sub chamber (51) communicating with the inside of the main combustion chamber (2) through a communication hole (52) is formed. Fuel is injected from a main fuel injection valve (3) in...

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Bibliographische Detailangaben
Hauptverfasser: NOMURA HIROSHI, TSUCHIDATE TSUTOMU
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To suppress the discharge of microparticulate matters.SOLUTION: On a top surface of a main combustion chamber (2), a sub chamber (51) communicating with the inside of the main combustion chamber (2) through a communication hole (52) is formed. Fuel is injected from a main fuel injection valve (3) into the main combustion chamber (2), and fuel is injected from a sub fuel injection valve (53) into the sub chamber (51). From the communication hole (52), a jet flame is ejected. When the temperature representing the temperature on a wall surface in an engine combustion chamber is lower than a set temperature, main injection amount injected from the main fuel injection valve (3) into the main combustion chamber (2) is reduced, and a sub injection amount injected in an intake stroke from the sub fuel injection valve (53) into the sub chamber (51) is increased.SELECTED DRAWING: Figure 7 【課題】微粒子状物質の排出を抑制する。【解決手段】主燃焼室(2)の頂面に、連通孔(52)を介して主燃焼室(2)内に連通する副室(51)が形成されている。主燃料噴射弁(3)から主燃焼室(2)内に燃料が噴射され、副燃料噴射弁(53)から副室(51)内に燃料が噴射される。連通孔(52)からはジェット火炎が噴出せしめられる。機関燃焼室内壁面の温度を代表する温度が設定温度よりも低いときには、主燃料噴射弁(3)から主燃焼室(2)内に噴射される主噴射量を減量すると共に、副燃料噴射弁(53)から副室(51)内に吸気行程時に噴射される副噴射量が増量される。【選択図】図7