2.7. C.S.D.(Cold Start Device) 2.7.1. Cold Starting Advancer Purpose In order to facilitate easy engine starting under cold temperatures, the advancer senses the cooling water temperature for advancing the fuel injection timing. 2.7.1.1. Structure & Function 21 At normal operating Termo-elementt Engine coolant Sub-port is opened Main port Sub port Piston Fuel IN Spring Plunger Fuel gallery Plunger barrel At cold starting Sub-port is closed Fuel IN When the coolant temperature is higher than specified value, the thermo-element keeps expanding and the sub- port is opened.
When the coolant temperature is lower than specified value, the thermo-element keeps shrinking and the sub- port is closed by piston. N