西安康明斯（简称XCEC）是美国康明斯和陕汽集团以50：50的股权共同组建的中美合资企业。公司基地设在西安市经济技术开发区内，引进康明斯ISM型11升全电控重型柴油机，预期将于2007年中期正式投产。 康明斯是美国财富五百强企业，2005年在美国被评选为亚洲裔职员最佳雇主，进入中国市场三十年以来，作为中国柴油机行业最大的外商投资企业，康明斯在华拥有十一家合资和独资企业，年营业额逾十亿美元。西安康明斯是继重庆康明斯和东风康明斯之后康明斯在华的第三个发动机合资项目。 XCEC is invested by America Cummins Inc. and China's Shaanxi Automobile Group Company Ltd with 50:50 share right. The manufacture base of XCEC locate in Economy Development Area of Xian, XCEC will introduce the Cummins ISM 11-liter heavy-duty engine and forecast to produce in the middle of 2007. Cummins is in the list of US Fortune Top 500 and has had a presence in the China market for 30 years. Cummins is the largest foreign investor in the China diesel engine industry, which makes medium-duty and high-horsepower engines. Annual sales exceeded $1 billion. XCEC will be the third Engine joint venture of Cummins in China after Dongfeng Cummins and Chongqing Cummin.