Water ingress preventing structure for tailpipe
AssigneeHino Motors, Ltd.
InventorsHiroshi Endo, Hiroshi Tsukisaka
Life of this patent
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Abstract
Disclosed is a water ingress preventive structure for a tailpipe which discharges exhaust gas outside of a vehicle at a terminal of an exhaust passage system. A curved shape is imparted to the tailpipe. A partition is mounted on an inner periphery of a curved portion outward of a curved direction so as to be gradually spaced apart from the inner periphery toward downstream in a direction of flow of the exhaust gas. Thus, a dead end portion is defined by the partition and the inner periphery of the curved portion outward of the curved direction.
Claims8
A tailpipe for discharge of exhaust gas outside of a vehicle at a terminal of an exhaust passage system, the tailpipe including a water ingress preventive structure, and a curved shape being imparted to said tailpipe, the tailpipe comprising:
- a partition mounted on an inner periphery of a curved portion, outward of a curved direction, of said tailpipe so as to be gradually spaced apart from said inner periphery toward downstream in a flow direction of the exhaust gas,
- wherein a dead end portion is defined by said partition and said inner periphery of the curved portion outward of the curved direction,
- wherein the curved shape is vertically imparted to the tailpipe such that a flow of the exhaust gas from upward to downward is curved into a horizontal direction and is directed to an outlet of the tailpipe, and
- wherein a particulate sensor is disposed upstream of the partition in the flow direction of the exhaust gas.
A tailpipe for discharge of exhaust gas outside of a vehicle at a terminal of an exhaust passage system, the tailpipe including a water ingress preventive structure, and a curved shape being imparted to the tailpipe, the tailpipe comprising:
- a drainage opening on a curved portion of the tailpipe at a position outward of a curved direction and opposite to an outlet of said tailpipe;
- and
- a cover for covering, in a spaced-apart relationship, an outer periphery of said curved portion outward of the curved direction so as not to block said drainage opening, said cover extending upstream in a scroll shape from a downstream end of said drainage opening to open a drainage port upstream of said drainage opening,
- wherein the curved shape is vertically imparted to the tailpipe such that the flow of the exhaust gas from upward to downward is curved into a horizontal direction and is directed to the outlet, and
- wherein a particulate sensor is disposed upstream of the drainage opening in a flow direction of the exhaust gas.
Dependencies are inferred from the claim text.