Underfloor structure for automobile
AssigneeNissan Motor Co., Ltd.
InventorsMoritsune Nakata, Masatoshi Aoki
Life of this patent
Estimating the term…
Abstract
An underfloor structure for automobile capable of reducing aerial resistance under a floor of the automobile and improving its cooling capability against heat-radiant parts such as break units, a transmission etc. The underfloor structure includes an undercover for closing an underside of a high-pressure section. The undercover consists of a pair of ducts which communicates with the high-pressure section to thereby discharge heated air contained therein toward rear wheels of the automobile and a narrow part which is arranged between the discharging parts to narrow an air flow flowing from a front of the automobile along an underside of the undercover. In one form of the ducts, they are formed so as to face lateral sides of the automobile, respectively.
Claims15
An underfloor structure for an automobile, comprising:
- an undercover for closing an underside of an engine compartment disposed in a front section of said automobile, said undercover having a pair of discharging parts arranged symmetrically of a center line of said automobile, said discharging parts communicating with said engine compartment for discharging a flow of heated air therefrom toward rear wheels of said automobile, a narrow part arranged between said discharging parts to narrow an air flow flowing from a front of said automobile along an underside of a floorboard of the automobile thereby discharging the air flow toward a transmission and a rear differential gear located under a floor of said automobile and behind said engine compartment, and at least one air flow control means disposed in a rear part of said undercover for controlling an air flow thereat, said air flow control means consisting of
- control means for controlling the heated air flow direction to prevent a pressure rise of an air flow under said automobile,
- guide means for guiding the air flow flowing out from said narrow part to an upward part of an underfloor of said automobile, and
- preventing means for preventing a separation of the air flow discharged from said narrow part away from said transmission and said rear differential gear.
Dependencies are inferred from the claim text.