Car provided with a supercharged internal combustion engine

Patent metadata

Field	Value
Publication number	US-12234764-B2
Application number	US-202318454879-A
Country	US
Kind code	B2
Filing date	Aug 24, 2023
Priority date	Aug 25, 2022
Publication date	Feb 25, 2025
Grant date	Feb 25, 2025

Abstract

A car having two front wheels; two rear drive wheels; a supercharged internal combustion engine which is provided with a plurality of cylinders with which respective pistons slide and a drive shaft connected to the pistons; a compressor configured to compress air suited to be sucked by the supercharged internal combustion engine; a transmission which is interposed between the internal combustion engine and the rear drive wheels and has: a drum which is brought into rotation by the drive shaft, at least one clutch contained in the drum to receive the motion from the drum, and a primary shaft connected to the clutch; and an actuating system which connects the drum of the transmission to the first compressor so as to receive the motion from the drum of the transmission to cause the rotation of the first compressor.

First claim

The invention claimed is:

1. A car ( 1 ) comprising:
two front wheels ( 2 );
two rear drive wheels ( 4 );
a supercharged internal combustion engine ( 5 ), which is provided with a plurality of cylinders ( 18 ), with which respective pistons ( 19 ) slide, and with a drive shaft ( 20 ) connected to the pistons ( 19 );
a first compressor ( 49 ) configured to compress air suited to be sucked by the supercharged internal combustion engine ( 5 ); and
a transmission ( 7 ) which is interposed between the internal combustion engine ( 5 ) and the rear drive wheels ( 4 ), is configured to vary a gear ratio between the drive shaft ( 20 ) and the rear drive wheels ( 4 ) by alternately engaging a plurality of different gears, and comprises a drum ( 64 ) which is brought into rotation by the drive shaft ( 20 ), at least one clutch ( 65 ) contained in the drum ( 64 ) to take the motion from the drum ( 64 ), a primary shaft ( 66 ) directly connected to the clutch ( 65 ), a secondary shaft ( 68 ) which transmits the motion to the rear drive wheels ( 4 ), and a plurality of gearings, each of which defines a respective gear and is configured to transmit the motion from the primary shaft ( 66 ) to the secondary shaft ( 68 );
wherein the drum ( 64 ) of the transmission ( 7 ) is coupled to the first compressor ( 49 ) and configured to receive the rotary motion from the drum ( 64 ) of the transmission ( 7 ) to cause a rotation of the first compressor ( 49 ) within the compressor unit ( 37 ).

2. The car ( 1 ) according to claim 1 further comprising a varying device ( 84 ) which is interposed between the drum ( 64 ) of the transmission ( 7 ) and the compressor ( 49 ) and has a variable gear ratio.

3. The car ( 1 ) according to claim 2 , wherein the varying device ( 84 ) has a centrifugal activation so as to autonomously change the gear ratio depending on the rotation speed of the transmission ( 7 ).

4. The car ( 1 ) according to claim 2 , wherein the varying device ( 84 ) is configured to decrease the gear ratio as the rotation speed of the transmission ( 7 ) increases.

5. The car ( 1 ) according to claim 2 , wherein the varying device ( 84 ) has only two different gear ratios.

6. The car ( 1 ) according to claim 2 , wherein the varying device ( 84 ) is connected to the drum ( 64 ) of the transmission ( 7 ) on the opposite side of the primary shaft ( 66 ).

7. The car ( 1 ) according to claim 6 , wherein:
the drum ( 64 ) of the transmission ( 7 ) is arranged on an opposite side of the internal combustion engine ( 5 ) relative to the primary shaft ( 66 ); and
the transmission ( 7 ) comprises a transmission shaft ( 67 ) which connects the drive shaft ( 20 ) to the drum ( 64 ), is coaxial to the primary shaft ( 66 ), and is inserted inside the primary shaft ( 66 ).

8. The car ( 1 ) according to claim 7 , wherein the primary shaft ( 66 ) and the transmission shaft ( 67 ) of the transmission ( 7 ) are coaxial to the drive shaft ( 20 ) of the internal combustion engine ( 5 ).

9. The car ( 1 ) according to claim 1 , wherein:
the drum ( 64 ) of the transmission ( 7 ) is arranged on an opposite side of the internal combustion engine ( 5 ) relative to the primary shaft ( 66 ); and
the transmission ( 7 ) comprises a transmission shaft ( 67 ) which connects the drive shaft ( 20 ) to the drum ( 64 ), is coaxial to the primary shaft ( 66 ), and is inserted inside the primary shaft ( 66 ).

10. The car ( 1 ) according to claim 1 , wherein each of the plurality of gearings defining a gear of the transmission ( 7 ) comprises a primary toothed gear ( 70 ) mounted on the primary shaft ( 66 ) and a secondary toothed gear ( 71 ) mounted on the secondary shaft ( 68 ).

11. The car ( 1 ) according to claim 1 , wherein the clutch ( 65 ) comprises driving discs integral with the drum ( 64 ) and rotates together with the drive shaft ( 20 ) to which the drum ( 64 ) is constrained, and driven discs interspersed with the driving discs and integral with the primary shaft ( 66 ) to always rotate together with the primary shaft ( 66 ).

12. The car ( 1 ) according to claim 1 , further comprising a second compressor ( 49 ) which is independent and separate from the first compressor ( 49 ), receives the rotary motion from the drum ( 64 ) of the transmission ( 7 ), and is configured to compress air suited to be sucked by the supercharged internal combustion engine ( 5 ).

13. The car ( 1 ) according to claim 12 , wherein:
the first and second compressors ( 49 ) are arranged parallel to and spaced apart from each other so as to rotate around two rotation axes ( 85 ), which are parallel to and spaced apart from each other, and are parallel to a rotation axis ( 86 ) of the drum ( 64 ) of the transmission ( 7 ); and
the rotation axis ( 86 ) of the drum ( 64 ) of the transmission ( 7 ) is arranged between the rotation axes ( 85 ) of the first and second compressors ( 49 ).

14. The car ( 1 ) according to claim 12 , wherein
an intermediate shaft ( 87 ) receives the rotary motion from the drum ( 64 ) of the transmission ( 7 ) and rotates around a rotation axis ( 88 ) which is parallel to and spaced from a rotation axis ( 86 ) of the drum ( 64 ) of the transmission ( 7 );
a central toothed gear ( 89 ) which receives the rotary motion from the intermediate shaft ( 87 ); and
two side toothed gears ( 90 ), which are arranged on either side of the central toothed gear ( 89 ), mesh with the central toothed gear ( 89 ) and each transmit rotary motion to a corresponding one of the first and second compressors ( 49 ).

Assignees

• Ferrari Spa

Inventors

• Favaretto Fabrizio

Classifications

• B60K2015/03118

  Multiple tanks, i.e. two or more separate tanks · CPC title

• B60Y2400/434

  Hydrogen fuel engines · CPC title

• B60K2015/03315

  for hydrogen · CPC title

• F16H2200/0056

  the gear ratios comprising seven forward speeds · CPC title

• F02B39/12

  Drives characterised by use of couplings or clutches therein (using fluid slip couplings for varying gear ratio F02B39/08) · CPC title