1. An oil filter mounting structure in an internal combustion engine in which the outside a crankcase in the direction of a crankshaft is covered by a case cover, comprising:
a spacer interposed between the crankcase and the case cover, the spacer being formed with a lubrication system,
the spacer being provided with an oil filter mounting surface which is flush with a first mating surface with respect to the crankcase, and a part of the crankcase to which the oil filter mounting surface of the spacer faces is formed with a recess opening on top,
wherein the oil filter is mounted on the oil filter mounting surface and extends into the recess of the crankcase.
2. The oil filter mounting structure in an internal combustion engine according to claim 1, wherein the spacer includes:
an oil pump assembled thereto,
a filter introducing channel which communicates with a pump discharge port of the oil pump and an oil introducing port on the oil filter mounting surface and is defined by opposed channel walls and a bottom wall which is formed at least into a receding part in cross section, and
a filter deriving channel which communicates with an oil deriving port and an oil supply port on the oil filter mounting surface and is defined by opposed channel walls and a bottom wall which is formed at least into the receding part in cross section.
3. The oil filter mounting structure in an internal combustion engine according to claim 2, wherein an opening end surface of the opposed channel walls of the spacer is flush with a second mating surface with respect to the case cover, and
a partitioning plate is brought into abutment with the opening end surface of the opposed channel walls to form the filter introducing channel and the filter deriving channel.
4. The oil filter mounting structure in an internal combustion engine according to claim 3, wherein an oil tank chamber is formed between the side wall of the spacer which is closer to the first mating surface with respect to the crankcase and the case cover, the spacer is formed with a pump body of the oil pump in cooperation with the channel walls, and a pump intake channel formed on the pump body has a pump intake port opening at the lower portion of the oil tank chamber.
5. The oil filter mounting structure in an internal combustion engine according to claim 1, further comprising an oil pump provided on the spacer, wherein an oil pump drive shaft of the oil pump is arranged coaxially with a balancer shaft.
6. The oil filter mounting structure in an internal combustion engine according to claim 3, wherein the partitioning plate is L-shaped and is formed of aluminum.
7. The oil filter mounting structure in an internal combustion engine according to claim 2, the filter introducing channel and the filter deriving channel are L-shaped.
8. The oil filter mounting structure in an internal combustion engine according to claim 1, wherein the recess in which the oil filter is disposed is formed in an upper portion of the crankcase.
9. The oil filter mounting structure in an internal combustion engine according to claim 3, wherein the oil pump includes a scavenger pump body and a feed pump body which are disposed on opposite sides of a pump unit partitioning plate.
10. The oil filter mounting structure in an internal combustion engine according to claim 9, wherein the pump unit partitioning plate is flush with the first mating surface of the spacer.
11. An oil filter mounting structure in an internal combustion engine in which the outside a crankcase in the direction of a crankshaft is covered by a case cover, comprising:
a spacer interposed between the crankcase and the case cover, the spacer being formed with a lubrication system,
the spacer being provided with an oil filter mounting surface which is flush with a first mating surface with respect to the crankcase, and a part of the crankcase to which the oil filter mounting surface of the spacer faces is formed with a recess opening on top,
wherein the oil filter is mounted on the oil filter mounting surface and extends into the recess of the crankcase.
12. The oil filter mounting structure in an internal combustion engine according to claim 11, wherein the spacer includes:
an oil pump assembled thereto,
a filter introducing channel which communicates with a pump discharge port of the oil pump and an oil introducing port on the oil filter mounting surface and is defined by opposed channel walls and a bottom wall which is formed at least into a receding part in cross section, and
a filter deriving channel which communicates with an oil deriving port and an oil supply port on the oil filter mounting surface and is defined by opposed channel walls and a bottom wall which is formed at least into the receding part in cross section.
13. The oil filter mounting structure in an internal combustion engine according to claim 12, wherein an opening end surface of the opposed channel walls of the spacer is flush with a second mating surface with respect to the case cover, and
a partitioning plate is brought into abutment with the opening end surface of the opposed channel walls to form the filter introducing channel and the filter deriving channel.
14. The oil filter mounting structure in an internal combustion engine according to claim 13, wherein an oil tank chamber is formed between the side wall of the spacer which is closer to the first mating surface with respect to the crankcase and the case cover, the spacer is formed with a pump body of the oil pump in cooperation with the channel walls, and a pump intake channel formed on the pump body has a pump intake port opening at the lower portion of the oil tank chamber.
15. The oil filter mounting structure in an internal combustion engine according to claim 11, further comprising an oil pump provided on the spacer, wherein an oil pump drive shaft of the oil pump is arranged coaxially with a balancer shaft.
16. The oil filter mounting structure in an internal combustion engine according to claim 13, wherein the partitioning plate is L-shaped and is formed of aluminum.
17. The oil filter mounting structure in an internal combustion engine according to claim 12, the filter introducing channel and the filter deriving channel are L-shaped.
18. The oil filter mounting structure in an internal combustion engine according to claim 11, wherein the recess in which the oil filter is disposed is formed in an upper portion of the crankcase.
19. The oil filter mounting structure in an internal combustion engine according to claim 13, wherein the oil pump includes a scavenger pump body and a feed pump body which are disposed on opposite sides of a pump unit partitioning plate.
20. The oil filter mounting structure in an internal combustion engine according to claim 19, wherein the pump unit partitioning plate is flush with the first mating surface of the spacer.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. Floating photovoltaic system including:
a floating structure with a series of floating modular blocks, said floating modular blocks being movably connected to form a basically flat floating grid with a float height;
a strengthening structure, parallel to the upper side of said floating structure and arranged within the float height, said strengthening structure having a series of strengthening beams, in which each one of said strengthening beams is movably connected to at least two floating modular blocks;
a supporting structure including one or more rigid supporting frames said rigid supporting frames being movably connected to said strengthening beams;
one or more photovoltaic panels fixed on said supporting frames;
characterized in that the floating photovoltaic system includes a holding and limiting structure to keep a carpet of aquatic plants, said holding and limiting structure being movably connected to said strengthening structure.
2. (canceled)
3. Floating photovoltaic system according to claim 1, in which said holding and limiting structure includes:
one or more limiting beams arranged at a distance from the floating structure so as to form a limiting line of the floating photovoltaic system;
a series of connection beams with an external end connected to the limiting beam and an internal end connected to the strengthening structure in a movable manner and adjustable in height so that the height of the limiting line can be adapted to floating line of the floating photovoltaic system;
a safety and holding net for the aquatic plants, said safety and holding net being placed in the space between the limiting line and the floating structure and said safety and holding net being connected to said limiting beams and to said strengthening beams.
4. Floating photovoltaic system according to claim 1, in which said floating blocks are formed of:
hollow bodies of a parallelepiped shape with a lower side, an upper side and four lateral sides which form four lateral corners;
a filling opening created in one of said lateral sides to regulate the upward thrust of the floating modular blocks;
connection interfaces arranged in the proximity of said lateral corners, said connection interfaces including flanges with through openings, said through openings being vertically superimposed and connected through the insertion of a connecting pin.
5. Floating photovoltaic system according to claim 4, in which floating modular blocks are made of synthetic material.
6. Floating photovoltaic system according to claim 4, in which said strengthening beams include open cross-section metal profiles with at least two connecting fins, said connecting fins protruding from said metal profile and delimited openings vertically superimposing the respective through openings of the connection interfaces of at least two floating modular blocks.
7. Floating photovoltaic system according to claim 1, in which said strengthening beams include one or more portions for connecting auxiliary structures chosen in the group including:
holding and limiting structures;
photovoltaic panel support structures;
railings;
landing stages; or
cableways.
8. Floating photovoltaic system according to claim 1, in which said supporting frame for the photovoltaic panels rests on two opposing strengthening beams through the interposition of spring between said supporting frame and said strengthening beam.
9. Floating photovoltaic system according to claim 8, in which said supporting frame includes two long opposing sides and two short opposing sides and two annular seats are formed at each of the opposing short sides, said annular seats being vertically inserted on the respective connection column bolts, said connection column bolts being fixed to the strengthening beams on which said supporting frame rests, and in which a positioning plate is connected to the free end of the connection column bolt so as to prevent the supporting frame from coming off the connection column bolt, in which:
between a first annular seat of each short side and the corresponding strengthening beam there is a helical spring positioned on the connection column bolt so that the helical spring forms a spacer between said strengthening beam and said supporting frame and so that the spring elastically prevents the supporting frame from approaching the strengthening beam; and
between said second annular seat of each short side and the positioning plate there is a second helical inserted on the connection column bolt so that the supporting frame rests rigidly against said strengthening beam and said second helical spring elastically prevents the supporting frame from moving away from the strengthening beams; and
in which said springs provides allow a slight inclination of the supporting frame and of the photovoltaic panels connected to it with respect to the upper side of the floating structure.
10. Floating photovoltaic system according to claim 1, including a floating landing stage to connect the floating photovoltaic system to the shore, in which said landing stage includes joints which permit a movement and rotation between two adjacent floating modular blocks.