Combustion Management System

• US 20120266842A1
• Filed: 12/23/2010
• Published: 10/25/2012
• Est. Priority Date: 12/24/2009
• Status: Abandoned Application

• Current Assignee: Libertine FPE Ltd.
• Original Assignee: Libertine FPE Ltd.
• Inventors: Cockerill, Sam
• Application Number:
  US13/517,166
• Publication Number:
  US 20120266842A1
• Time in Patent Office: Days
• US Class Current: 123/294
• CPC Class Codes: F01B 11/001 in which the movement in the two directions is obtained by one double acting piston motor
• CPC Class Codes: F01L 9/20 by electric means
• CPC Class Codes: F02B 63/04 for electric generators
• CPC Class Codes: F02B 71/04 Adaptations of such engines for special use; Combinations of such engines with apparatus driven thereby
• CPC Class Codes: F02B 75/002 Double acting engines

Abstract

A combustion management system for a combustion engine having at least one cylinder with an intake means comprising a sliding port valve and an intake solenoid poppet valve arranged in series and provided at a distance from the cylinder ends, and an exhaust solenoid poppet valve provided at each of the cylinder ends, the system comprising: a valve control means for controlling the intake solenoid poppet valve and the exhaust solenoid poppet valve independently of the position of the piston moving within the cylinder to control the compression and expansion ratios, wherein the piston moves over and past the intake means during each stroke.

Claims

1. A combustion management system for a combustion engine having at least one cylinder with an intake means comprising a sliding port valve and an intake solenoid poppet valve arranged in series and provided at a distance from the cylinder ends, and an exhaust solenoid poppet valve provided at each of the cylinder ends, the system comprising:

a valve control means for controlling the intake solenoid poppet valve and the exhaust solenoid poppet valve independently of the position of the piston moving within the cylinder to control the compression and expansion ratios, wherein the piston moves over and past the intake means during each stroke.

2. The system of claim 1, configured such that when the piston is at the extremity of its movement within the cylinder, the clearance between the top of the piston and the end of the combustion chamber is more than half the diameter of the piston.

3. The system of claim 1, wherein the valve control means is configured to control the opening of the intake valve and exhaust valves independently.

4. The system of claim 1, wherein the intake poppet valve is independently controlled to open for a sub-period within a period for which the sliding port valve is open as a result of piston position.

5. The system of claim 1, further comprising a fuel injection means configured to inject fuel into a combustion chamber immediately prior to the sliding port valve closing.

6. The system of claim 1, further comprising a fuel sensor for determining the type of fuel that is to be used in the engine.

7. The system of claim 1, further comprising an air flow sensor and an exhaust gas sensor for determining the amount of fuel to inject into each chamber according to the quantity of air added and the type of fuel used.

8. The system of claim 1, further comprising a spark ignition timing control means for adjusting the timing of the spark ignition.

9. The system of claim 1, further comprising a plurality of coils and stator elements positioned along the cylinder, wherein movement of the piston within the cylinder induces magnetic flux within the coils.

10. The system of claim 9, further comprising a compression ratio control means including a knock sensor, wherein the compression ratio control means can adjust the compression ratio by using readings output from the knock sensor to control the kinetic energy recovery from the piston by the coils.

11. The system of claim 9, wherein the position of the piston within the cylinder can be determined from the electrical output of the coils.

12. The system of claim 10, wherein the compression ratio control means can control the coils to limit the movement range of the piston by modulation of the magnetic force applied to the piston.

13. The system of claim 10, further comprising a temperature control means and a plurality of temperature sensors in proximity to the coils, electronic devices and other elements sensitive to high temperatures for providing temperature readings to the temperature control means.

14. The system of claim 13, wherein the temperature control means is configured to increase the flow of cooling air in the cooling means in response to increased temperatures.

15. The system of claim 1, wherein the temperature control means also provides an input to the valve control means so that the engine power output is reduced when sustained elevated temperature readings are detected to avoid engine damage.