共查询到18条相似文献,搜索用时 218 毫秒
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文中采用GT-Suite软件中的GT-Fuel模块建立柴油机高压共轨喷油系统的仿真模型。分析柴油机轨压对高压共轨系统动态压力特性与喷油规律的影响,以及液力缓冲器对共轨中压力波动的影响,从而改善柴油机性能,为高功率密度柴油机的匹配提供了依据。 相似文献
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2001年,芬兰W(a|¨)rtsil(a|¨)公司和德国L’Orange公司将第1款重油共轨喷油系统配装在芬兰W(a|¨)rtsil(a|¨)-W32船用柴油机上推向市场。与当今量产的高速船用柴油机用的共轨喷油系统相比,这种共轨喷油系统非常复杂,且工作频率相当缓慢,而第2代重油共轨喷油系统在性能、价格、使用寿命和维修方便性等方面均得到了明显的改善。 相似文献
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将多个喷油器并联在一个高压蓄油器上,由电控单元(ECU)控制喷油,称为共轨喷油,简称CR。它用在柴油机电子控制喷油系统(EDC)中,称为蓄压式共轨喷射系统,简称EDC—CR。目前,蓄压式共轨喷射系统,已运用在依维柯汽车的索菲墨柴油机(8140.43S型和8140.43N型)上。蓄压式共轨喷射系统在这2种柴油机上的配用,使依维柯汽车如虎添翼,特别是在发动机的性能和排污方面,完全达到了国家的要求。 相似文献
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This paper presents an accurate engine fuel injection quantity control technique for high pressure common rail (HPCR) injection
systems by an iterative learning control (ILC)-based, on-line calibration method. Accurate fuel injection quantity control
is of importance in improving engine combustion efficiency and reducing engine-out emissions. Current Diesel engine fuel injection
quantity control algorithms are either based on pre-calibrated tables or injector models, which may not adequately handle
the effects of disturbances from fuel pressure oscillation in HPCR, rail pressure sensor reading inaccuracy, and the injector
aging on injection quantity control. In this paper, by using an exhaust oxygen fraction dynamic model, an on-line parameter
calibration method for accurate fuel injection quantity control was developed based on an enhanced iterative learning control
(EILC) technique in conjunction with HPCR injection system. A high-fidelity, GT-Power engine model, with parametric uncertainties
and measurement disturbances, was utilized to validate such a methodology. Through simulations at different engine operating
conditions, the effectiveness of the proposed method in rejecting the effects of uncertainties and disturbance on fuel injection
quantity control was demonstrated. 相似文献
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针对二甲醚燃料饱和蒸气压高、黏度低、易与空气形成混合气等特性,开发了低压共轨燃油系统。主要进行了系统的总体设计、电子控制单元(ECU)的软硬件开发和在油泵台架上的试验。试验结果表明,在新开发系统的驱动下,喷油器启合及时,喷射有力,雾化效果好;并获取供油量的MAP图,实现了对喷油量和喷油定时的外触发、外同步的反馈控制。 相似文献
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