Fuel reformer system

A method of main reformer (102) startup is disclosed. The method comprises introducing a first supply of fuel (122) and a first supply of air (123) into a micro-reformer (120). The first supply of fuel (123) is increased to produce a heated reformate (126) in the micro-reformer (120). The heated reformate (126) is directed through a main reformer (102) in order to heat the main reformer (102). At least a portion of the heated reformate (126) is burned in the main reformer (102). A second supply of fuel (103) and a second supply of air (108) is introduced into the main reformer (102) to produce a main supply of reformate (62). A method for maintaining a vehicle device in standby condition is also disclosed.