Oil pan for internal combustion engine

Abstract

An oil pan for an internal combustion engine mounted on a vehicle provided with a pair of right and left side members provided so as to extend in a front-rear direction of the vehicle and a cross member provided so as to extend in a width direction of the vehicle and fixed to the pair of side members, the oil pan formed of an upper oil pan attached to a body of the internal combustion engine and including an opening in a bottom portion and a lower oil pan attached so as to cover the opening of the upper oil pan from below, including an overlapping portion situated above the cross member and overlapping the cross member. The lower oil pan is provided so as to be situated in front of or behind the overlapping portion so as to include the overlapping portion.

1 - 8 . (canceled) 
     
     
         9 . An oil pan for an internal combustion engine mounted on a vehicle provided with a pair of right and left side members provided so as to extend in a front-rear direction of the vehicle and a cross member provided so as to extend in a width direction of the vehicle and fixed to the pair of side members, the oil pan
 formed of an upper oil pan attached to a body of the internal combustion engine and including an opening in a bottom portion and a lower oil pan attached so as to cover the opening of the upper oil pan from below,   including an overlapping portion situated above the cross member and overlapping the cross member, wherein   the lower oil pan is provided so as to be situated in front of or behind the overlapping portion so as to include the overlapping portion.   
     
     
         10 . The oil pan for the internal combustion engine according to  claim 9 , wherein
 a bottom portion, opposed to the cross member, of the lower oil pan is formed so as to incline upward or downward from a front end side of the overlapping portion to a rear end side of the overlapping portion, and has a substantially uniform distance from the upper surface portion of the cross member.   
     
     
         11 . The oil pan for the internal combustion engine according to  claim 9 , wherein
 at least the lower oil pan is provided so as to extend frontward beyond a front end portion of the internal combustion engine or rearward beyond a rear end portion of the internal combustion engine.   
     
     
         12 . The oil pan for the internal combustion engine according to  claim 9 , wherein
 an inclined portion is formed substantially in a central part, in the front-rear direction, of a bottom portion of the upper oil pan, and the bottom portion is formed so that a surface behind the inclined portion is situated lower than a surface of a front side of the inclined portion.   
     
     
         13 . The oil pan for the internal combustion engine according to  claim 12 , wherein
 the upper oil pan is formed so that a vertical length behind the inclined portion is larger than a vertical length on the front side of the inclined portion.   
     
     
         14 . The oil pan for the internal combustion engine according to  claim 9 , wherein
 a lowermost portion is provided at a portion situated in a lowermost position in the bottom portion of the upper oil pan, the opening passing through the bottom portion is formed in the lowermost portion, and an area of opening of the opening is smaller than that of an upper surface open portion.   
     
     
         15 . The oil pan for the internal combustion engine according to  claim 9 , wherein
 the lower oil pan has an extended portion extended so as to protrude outward from a lower side peripheral wall portion.   
     
     
         16 . The oil pan for the internal combustion engine according to  claim 15  further including a lid member sealing an open portion on an upper surface of the extended portion.