发明名称 CYLINDER INJECTION TYPE SPARK IGNITION ENGINE
摘要 <p><P>PROBLEM TO BE SOLVED: To solve a problem in a fuel-injection type spark ignition engine of the conventional art, wherein many man-hours are needed for forming air-fuel mixture for stratified-charge combustion, and the top surface of a piston is stained too heavily with spray in the stratified-charge combustion to attain a homogeneous combustion. <P>SOLUTION: The spark ignition engine comprises: a cylinder head 10 partitioning a combustion chamber 18; a piston 20 which has a flat top surface 21 and slidably fits in a cylinder head 10; a fuel injection nozzle 31 in which a plurality of orifices 47a, 47b of predetermined diameters are formed for making direct injection into the combustion chamber; and an ignition plug 25 for igniting an air-fuel mixture in the combustion chamber. According to operating conditions of an engine, either a homogeneous combustion mode or a stratified combustion mode is selected. In the stratified combustion mode, a range for a spray from the nozzle 31 is short, and then the spray reaches the plug 25 without the flow direction being changed by the top surface 21 of the piston 20. <P>COPYRIGHT: (C)2004,JPO</p>
申请公布号 JP2003314286(A) 申请公布日期 2003.11.06
申请号 JP20020121092 申请日期 2002.04.23
申请人 DENSO CORP;TOYOTA CENTRAL RES & DEV LAB INC 发明人 SAITO KIMITAKA;TANI TAISHIN;OKAMOTO ATSUYA;KOIKE MAKOTO
分类号 F02B23/10;F02B75/12;F02D41/04;F02D41/34;F02M31/125;F02M51/06;F02M53/06;F02M61/14;F02M61/18;(IPC1-7):F02B23/10 主分类号 F02B23/10
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