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    • 52. 发明公开
    • 불꽃 점화식 직접 분사 엔진의 제어 장치
    • 火花点火型直喷式发动机控制装置
    • KR1020030022040A
    • 2003-03-15
    • KR1020020053389
    • 2002-09-05
    • 마츠다 가부시키가이샤
    • 야마시타히로유키마루바라마사시요시다히로유키오타노리유키
    • F02D41/34
    • F02D41/402F02B2075/125F02D41/024F02D41/3023Y02T10/123Y02T10/26Y02T10/44
    • PURPOSE: To further enhance an action for promoting warming of a catalyst as compared with a conventional device of this type, without causing deterioration of emission and fuel economy when the catalyst is inactive. CONSTITUTION: This control device is provided with a tumble generation means, a fuel injection valve 19 for injecting fuel to a combustion chamber so that the fuel may retrograde against the tumble flow, the catalyst 31 in an exhaust passage, a temperature state discrimination means 41 for discriminating a temperature state of the catalyst 31, and a fuel injection control means 43. Divided injection is performed by the fuel injection control means 43 during a compression stroke period when the catalyst 31 is inactive, spray of the post injection is stayed around an ignition plug by high pressure of the compression stroke post period at ignition timing, and the timing of the injection is set to that air-fuel mixture by spray of early injection may be distributed around an air-fuel mixture layer of the post period injection.
    • 目的:与传统的这种装置相比,为了进一步增强促进催化剂升温的作用,当催化剂无活性时,不会引起排放恶化和燃料经济性。 构成:该控制装置设置有转鼓发生装置,用于将燃料喷射到燃烧室的燃料喷射阀19,使得燃料可以相对于转鼓逆行,排气通道中的催化剂31,温度状态判别装置41 用于区分催化剂31的温度状态和燃料喷射控制装置43.在催化剂31不活动的压缩冲程期间,通过燃料喷射控制装置43进行分割喷射,后喷射的喷雾停留在 火花塞在点火正时的压缩行程后期的高压,并且喷射时间被设定为通过喷射喷射的早期喷射的空气 - 燃料混合物可以在后期喷射的空气 - 燃料混合物层周围分布。
    • 54. 发明授权
    • 직접 분사 가솔린 엔진의 연료 압력 설정 방법
    • GDI发动机的燃油压力设定方法
    • KR100335920B1
    • 2002-05-10
    • KR1019990063712
    • 1999-12-28
    • 현대자동차주식회사
    • 박용정
    • F02D41/30
    • F02D41/3836F02B17/005F02D41/3023
    • 본발명은가변밸브타이밍제어방법의적용시에발생하는연소실내유효압축비의변화를고려하여인젝터를통한연료분사량이적정하게이루어질수 있도록하는직접분사가솔린엔진의연료압력설정방법을제공하기위한목적으로, 성층모드연료압력값(Ps)을설정하는제1단계와, 균질모드연료압력값(Ph)을설정하는제2단계와, 연료압력값을선택하는제3단계와, 최종연료압력값(P)을설정하는제4단계로이루어지는직접분사가솔린엔진의연료압력설정방법에있어서, 상기제1단계에서성층모드의연료압력값설정은, 연료량과엔진의회전수를검출하는제11단계와; 상기제11단계에서검출한연료량과엔진의회전수로부터최초의성층모드연료압력값을설정하는제12단계와; 흡기밸브의가변밀폐구간에대한연소실내유효압력을일정간격으로검출하여그 변화비로부터웨이팅인자를연산하는제13단계와; 상기제13단계에서구한웨이팅인자를상기최초의성층모드연료압력값에곱셈보정하여수정된성층모드연료압력값을구해서상기제3단계로전달하는제14단계를포함하여이루어지는것을특징으로하는직접분사가솔린엔진의연료압력설정방법을제공한다.