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    • 6. 发明公开
    • 직접 분사식 내연기관 및 그 제어 방법
    • 直喷式内燃机及其控制方法
    • KR1020080007260A
    • 2008-01-17
    • KR1020077027229
    • 2006-09-20
    • 도요타 지도샤(주)
    • 아시자와다케시노무라히로시도미노오사무
    • F02B23/10F02D15/00F01L1/34
    • F02D13/0203F02D41/3011Y02T10/18
    • Tn a direct-injection internal combustion engine (1-1), a variable intake valve (41), of which valve timing can be varied, is used as an air intake valve through which an air intake path (5) and a combustion chamber (A) communicate with each other. The direct-injection internal combustion engine (1-1) includes: a variable-intake-valve control section (75) that controls the valve timing of the valuable intake valve (41); and an intake-air temperature acquisition section (74) that acquires a temperature of the intake air introduced into the combustion chamber (A). When the fuel is injected into the combustion chamber (A) via a fuel injection valve (21) during the compression stroke or the expansion stroke, if the acquired intake-air temperature is low, the closing timing of the variable intake valve (41) is advanced, so that the actual compression ratio is increased.
    • 在直喷式内燃机(1-1)中,使用可改变气门正时的可变进气门(41)作为进气阀,进气通道(5)和燃烧室 (A)相互沟通。 直喷式内燃机(1-1)包括:控制有价值的进气门(41)的气门正时的可变进气阀控制部(75)。 以及获取引入燃烧室(A)的吸入空气的温度的进气温度取得部(74)。 当在压缩行程或膨胀冲程期间燃料经由燃料喷射阀(21)被喷射到燃烧室(A)中时,如果所获取的进气温度低,则可变进气门(41)的关闭正时 是先进的,使实际压缩比增加。