Method For Variable Displacement Engine

• US 20200123973A1
• Filed: 10/19/2018
• Published: 04/23/2020
• Est. Priority Date: 10/19/2018
• Status: Active Grant

• Current Assignee: Benton Frederick Baugh
• Original Assignee: Benton Frederick Baugh
• Inventors: Baugh, Benton Frederick
• Granted Patent: US 10,641,168 B1
• Time in Patent Office: Days
• CPC Class Codes: F02B 69/02 for different fuel types, other than engines indifferent to fuel consumed, e.g. convertible from light to heavy fuel
• CPC Class Codes: F02B 75/047 by means of variable crankshaft position
• CPC Class Codes: F02B 75/048 by means of a variable crank stroke length
• CPC Class Codes: F02D 15/00 Varying compression ratio
• CPC Class Codes: F02D 15/02 by alteration or displacement of piston stroke
• CPC Class Codes: F16H 1/16 comprising worm and worm-wheel
• CPC Class Codes: F16H 19/001 for conveying reciprocating or limited rotary motion
• CPC Class Codes: F16H 21/20 with adjustment of throw

Abstract

The method of providing an internal combustion engine with one or more variable sized combustion chambers providing pistons in the cylinders forming combustion chambers, providing the pistons with piston connecting rods which are pivotably connected to the pistons on one end and to floating pins on the second end, providing crankshaft connecting rods pivotably connected to rod journals on the crankshaft and to the floating pins on a second end, and moving the position of the crankshaft relative to the cylinders such that when the position of the crankshaft relative to the cylinders is changed, the operating characteristics of the engine are changed.

Claims

1. The method of providing an internal combustion engine with one or more variable sized combustion chambers, comprising

providing one or more pistons in one or more cylinders forming one or more combustion chambers,

providing said one or more pistons with one or more piston connecting rods which are pivotably connected to said one or more pistons on a first end and to one or more floating pins on a second end,

providing one or more crankshaft connecting rods pivotably connected to one or more rod journals on a crankshaft on a first end and to said one or more floating pins on a second end, and

moving the position of said crankshaft relative to said cylinders such that when the position of said crankshaft relative to said cylinders is changed, the operating characteristics of the engine are changed.

2. The method of claim 1 further comprising providing a pivoting assembly for supporting said crankshaft comprising a body, one or more idler connecting rods, an idler connecting rod axle, and a pivot, said pivoting assembly pivoting about said pivot, and said one or more idler connecting rods being connected to said idler connecting rod axle on a first end and to said one or more floating pins on a second end.

3. The method of claim 2 further comprising that as the crankshaft is rotated the position of said one or more floating pins is determined by said one or more second ends of said crankshaft connecting rods and by said one or more second ends of said idler connecting rods.

4. The method of claim 3 further comprising such that the position of said one or more pistons is determined by said one or more piston connecting rods being connected to said one or more floating pins and said one or more pistons.

5. The method of claim 4 further comprising said cylinders having a centerline such that when said pivoting assembly is pivoted about said pivot, the average angle between the movement of said second end of said one or more idler connecting rods changes resulting in the component of the movement of said one or more floating pins parallel to the centerline of said one or more cylinders changing, changing the stroke of said one or more pistons within said one or more cylinders and therefore changing the size of the combustion chamber.

6. The method of claim 5 further comprising positioning said pivot such that as said pivoting assembly pivots the minimum volume of said combustion chamber is proximately a fixed percentage of the maximum volume of said combustion chamber in order to provide proximately a constant compression ratio.

7. The method of claim 2 further comprising providing a rotator which will rotate said pivoting assembly.

8. The method of claim 7 further comprising said rotator is a stepping motor.

9. The method of claim 2 further comprising providing a gear train to deliver the rotary torque from said crankshaft to a stationary rotating drive shaft.

10. The method of claim 2 further comprising adjusting the position of the pivot to change the compression ratio of the engine.

11. The method of claim 10 further comprising mounting said pivot on one or more eccentric bushings such that the rotation of said one or more eccentric bushing changes said position of said pivot.

12. The method of claim 1 further comprising mounting said crankshaft main journals on one or more eccentric bushings such that the rotation of said one or more eccentric bushing changes said position of said crankshaft.

13. The method of claim 12 further comprising linking said one or more eccentric bushings together to cause them to rotate at the same time.

14. The method of claim 12 further comprising said one or more eccentric bushings have a worm wheel profile on their outer diameter and are rotated by one or more worm gears.

15. The method of claim 14 further comprising linking said one or more worm gears together to cause them to rotate at the same time.

16. The method of claim 1 further comprising varying both said volume of said combustion chamber and said compression ratio of said combustion chamber for maximum efficiency.

17. The method of providing an internal combustion engine with one or more variable sized combustion chambers, comprising

providing one or more pistons in one or more cylinders forming one or more combustion chambers,

providing said one or more pistons with one or more piston connecting rods which are pivotably connected to said one or more pistons on a first end and to one or more rod journals on a crankshaft on a second end,

moving the position of said crankshaft relative to said cylinders such that when the position of said crankshaft relative to said cylinders is changed, the operating characteristics of the engine are changed.

18. The method of claim 17 further comprising adjusting the position of said crankshaft to change the compression ratio of the engine.

19. The method of claim 18 further comprising mounting said crankshaft main journals on one or more eccentric bushings such that the rotation of said one or more eccentric bushing changes said position of said crankshaft.

20. The method of claim 19 further comprising linking said one or more eccentric bushings together to cause them to rotate at the same time.

21. The method of claim 19 further comprising said one or more eccentric bushings have a worm wheel profile on their outer diameter and are rotated by one or more worm gears.

22. The method of claim 21 further comprising linking said one or more worm gears together to cause them to rotate at the same time.