The Development of a Rebust Accelerometer-Based Start of Combustion Sensing System

Huang, Jim ; Mumford, David

Westport Research Incorporated

关键词: Natural Gas;    Combustion;    Engines;    Exhaust Recirculation Systems;    Reliability;   

DOI  :  10.2172/993479
RP-ID  :  None
RP-ID  :  FC26-06NT42967
RP-ID  :  993479

美国|英语

来源: UNT Digital Library

【 摘 要 】

The development of modern combustion systems increasingly relies on detailed knowledge of the combustion event. As the limits of combustion are approached, tight control of combustion leads to improved emissions and higher efficiencies, while retaining and even improving engine reliability and durability. While developing a novel HCCI (Homogeneous Charge Compression Ignition) technology for large natural gas engines, Westport found that there was no reliable cost-effective technology to monitor the combustion event. As a result, Westport began working on developing a solution based on commercially available knock sensors. While initially developed around HCCI, Westport has identified that numerous other forms of combustion (high EGR systems, Homogeneous Charge Direct Injection, etc) will require combustion sensors. This requirement is also reflected in the development of other technologies in this field. However, the potential low system cost and the lack of intrusion into the cylinder head area are significant benefits for the Westport approach. Previous work by Westport has proven the method on two different large compression ignition gas engines. The objective of the current work is to improve the robustness of this technology; particularly, to identify and reduce the sensor-to-sensor and engine-to-engine variations.