Patent ID: 7472591
Filing Date: 2009-01-06
Classification: G01F

Abstract:
1. A control device of an internal-combustion engine comprising air-flow measurement means for measuring an air flow supplied to an internal-combustion engine and air-flow control means for controlling the air flow based on the air flow measured by said air-flow measurement means, wherein said air-flow measurement means includes a substrate, a heating resistor, a thermometric resistor provided in the proximity of the heating resistor, a drawn wire portion electrically connected to the heating resistor and provided on the substrate, insulating films containing nitride laminated on said substrate, said heating resistor arranged between said insulating films, said drawn wire portion associated with one of said insulating films, a contact portion hole formed in said one of said insulating films, said contact portion hole penetrating said one of said insulating films; and an electrical conductor film containing nitrides formed on side wall and bottom surface of said contact portion hole, wherein said heating resistor is electrically connected to said drawn wire through said electrical conductor film formed on said side wall and bottom surface of said contact portion hole.