Control method for SSC and ISG of vehicle and vehicle to which the control method is applied

A vehicle implementing a control method for a Start Stop Coasting (SSC) function and an Idle Stop and Go (ISG) function, the vehicle comprising:

• a vehicle operation status detector including an accelerator pedal sensor configured to sense an operation of an accelerator pedal and output a corresponding signal, a brake pedal sensor configured to sense an operation of a brake pedal and output a corresponding signal, a gear lever sensor configured to sense an operation of a gear lever and output a corresponding signal, and a vehicle speed sensor configured to sense a vehicle speed and output a corresponding signal;
• an injector configured to inject a fuel to an engine;
• an operation motor connected to the engine and configured to selectively start the engine;
• a transmission;
• a controller configured to control the injector, the operation motor, and the transmission based on an output signal from the vehicle operation status detector;
• and
• a memory configured to communicate with the controller,
• wherein the controller is configured to:
• determine whether an SSC activation condition is satisfied based on the output signal from the vehicle operation status detector,
• when the SSC activation condition is satisfied, control the injector to stop fuel injection and control the transmission to neutral to activate a SSC function,
• in a state that the SSC function is activated, determine whether a first ISG operation condition including a first reference vehicle speed is satisfied based on the output signal of the vehicle operation status detector, and
• when the first ISG operation condition is satisfied, deactivate the SSC function and activate the ISG function,
• wherein:
• when the SSC activation condition is not satisfied, the controller is configured to determine whether a second ISG operation condition is satisfied based on the output signal from the vehicle operation status detector, wherein the second ISG operation condition includes a second reference vehicle speed set to lower than the first reference vehicle speed, and
• when the second ISG operation condition is satisfied, the controller is configured to control the injector to stop fuel injection and control the transmission to be operated in a traveling stage to activate the ISG function.