Abstract: A side sill beam having a shape of an arch concave outwards in a vehicle-width direction is placed in a side sill, and includes first and second ends welded to joining areas with front and rear floor cross members, respectively. A first impact detection element that detects an impact from the outside in the vehicle-width direction is disposed near the joining areas of the side sill and the front or rear floor cross member, and a second impact detection element that detects an impact from the outside in the vehicle-width direction is disposed offset from the first impact detection element in a vehicle front-rear direction as viewed in the vehicle-width direction.

Abstract: A side sill beam having a shape of an arch concave outwards in a vehicle-width direction is placed in a side sill, and includes first and second ends welded to joining areas with front and rear floor cross members, respectively. A first impact detection element that detects an impact from the outside in the vehicle-width direction is disposed near the joining areas of the side sill and the front or rear floor cross member, and a second impact detection element that detects an impact from the outside in the vehicle-width direction is disposed offset from the first impact detection element in a vehicle front-rear direction as viewed in the vehicle-width direction.

Abstract: In a burner assembly connected with a combustion chamber at a fuel inlet of said combustion chamber, the improvement of which comprising a fuel duct which is connected at its one end to said fuel inlet and contains therein a fuel injection nozzle, ignition rod and air-fuel mixture diffuser, a blower means which has an outlet for blowing an air through said outlet of the blower means and said fuel duct into said combustion chamber, and a conduit member coupled to said inlet of the blower means, whereby pneumatic oscillation plane progressive waves are converted into plane stationary waves to thereby reduce progressive energy of said pneumatic oscillation plane progressive waves.