Westport Innovations Inc. (Westport) is a provider of engine and fuel system technologies utilizing gaseous fuels. The Company�s technology and products enable light- (less than 5.9 liter), medium- (5.9 to 8.9 liter), heavy-duty (11 to 16 liter) and high-horsepower (greater than 16 liter) petroleum-based fuel engines to use natural gas. As of December 31, 2011, the Company sold over 30,000 natural gas and propane engines to customers in more than 19 countries. In June 2013, Westport Innovations Inc. announced that it has acquired BAF Technologies, Inc. (BAF) and its subsidiary, ServoTech Engineering, Inc. (ServoTech), subsidiaries of Clean Energy Fuels Corp. The Company also offers a suite of alternative fuel systems for bi-fuel, mono-fuel and dual-fuel applications using LPG, CNG and LNG.