Search Results

Changan has upgraded its 1.6 L naturally aspirated GDI engine to meet future fuel economy and emission regulation base on its previous 1.6 L naturally aspirated GDI engine, the major upgrades include a high compression ratio of 13, 35Mpa direct injection system, cooled external EGR, thermo management module,and extensive measures to reduce friction. With this new engine, the vehicle fuel consumption is reduced by 9%, and meet the China 6b emission standard without GPF.

Changan Automobile Company recently develops a new 1.0L turbocharged GDI engine for its future vehicle as an affordable fuel-saving option. Fuel direct injection and turbo-charging are integrated to significantly improve fuel economy and power. Injection spray pattern plays an important role on GDI engine combustion system because of its critical influences on combustion and oil dilution. In this paper, four injector patterns were tested in an optical engine with Planar, double sided Laser Induced Fluorescence (LIF) with fuel & tracer and flame imaging methods to evaluate spray, mixture formation and combustion process in cylinder. Spray pattern and mixture formation are studied using LIF, while flame and combustion characteristics are studied by flame natural luminosity. The pictures of piston crown and glass liner are also evaluated for fuel spray impingement. Four types of multi-hole injectors are prepared.