【作者】

Christoph Mathey

【摘要】

该论文已在赫尔辛基举行的第28届CIMAC世界大会上发表，论文的版权归CIMAC所有。 ABB Turbocharging presented the possibilities to improve the performance of gas engines by applying the electrohydraulic variable valve timing system VCM® during the 2013 CIMAC congress in Shanghai. The considerable degree of VCM®'s flexibility allows in connection with Power2®, ABBs 2-stage turbocharging system, to satisfy even the most stringent requirements regarding air to fuel ratio and thermal load of highly demanding engine applications. After extensive testing of the full system on high speed pre-mix gas engines, confirming the possibility of the VCM® to improve the engine performance, it is now up to investigate the benefits for a diesel engine and to enhance its application range. Based on a generic model of a diesel engine extensive engine cycle simulations have been performed with the target to show how wide its operation field could be extended in comparison with conventional engine configurations. Furthermore the proposed concept with VCM® and Power2® shows the substantial improvements regarding fuel consumption and thermal load including the necessary pressure reserve for acceleration. This paper does not only show the thermodynamic performance, but gives also some indications regarding the possible control strategy to be applied for applications with variable engine speed.

【会议名称】

第28届CIMAC会议

【会议地点】

芬兰 赫尔辛基

【下载次数】

2

返回