JP2017533382A5

JP2017533382A5 -

Info

Publication number: JP2017533382A5
Application number: JP2017523940A
Authority: JP
Filing date: 2015-11-09
Publication date: 2018-12-20
Anticipated expiration: 2035-11-09

Claims

A method of controlling the operation of an internal combustion engine having a plurality of combustion chambers to transmit a desired output, each combustion chamber having at least one intake valve and at least one exhaust valve, the method comprising:
Operate the engine in a dynamic ignition level modulation scheme that ignites selected low combustion cycles with low torque output and ignites selected high combustion cycles with high torque output, with each combustion cycle at high or low torque output. Dynamically determining whether to ignite each ignition opportunity during operation of the engine;
Adjusting the charge to each ignition combustion cycle based on whether the high or low torque output has been selected for the ignition combustion cycle.

The method of claim 1, wherein the low torque output combustion cycle includes the use of an intake valve early closing (EIVC) cycle for the high torque output combustion cycle .

The method of claim 1, wherein the low torque output combustion cycle includes the use of an intake valve late closure (LIVC) cycle for the high torque output combustion cycle .

The method according to any one of claims 1 to 3 ,
Determining a desired effective ignition ratio that represents an ignition opportunity ratio that needs to be ignited at a reference output level to deliver the desired output;
Determining at least in part a combustion cycle that ignites at high power and a combustion cycle that ignites at low power, based at least in part on the effective ignition ratio.

The method of claim 4 , wherein
The effective ignition ratio is determined by an ignition ratio calculator;
A method wherein the determination of a combustion cycle for igniting at a high output and a combustion cycle for igniting at a low output is made by an ignition level determination module.

6. The method of claim 5 , wherein the ignition level determination module uses a sigma delta converter to determine a combustion cycle that ignites at high power and a combustion cycle that ignites at low power.

6. The method of claim 5 , wherein the ignition level determination module uses a look-up table to determine a combustion cycle that ignites at high power and a combustion cycle that ignites at low power.

8. The method according to claim 1, wherein the selection of the high or low torque output in each combustion cycle is determined at least in part using a sigma delta converter.

9. The method according to claim 6 or 8 , wherein the sigma delta converter is
Analog parts,
Digital parts,
A method that is implemented using at least one of programmable logic.

10. A method according to claim 6, 8 or 9 , wherein the sigma delta converter is implemented using program instructions executed by a processor.

11. A method according to any one of the preceding claims, wherein the selection of the high or low torque output is based at least in part on a state machine.

12. A method according to any one of the preceding claims, wherein during each low torque combustion cycle, the corresponding combustion chamber is not stopped and fuel is supplied to the corresponding combustion chamber, Combustion occurs and net torque is transmitted by the low torque combustion cycle.

13. A method according to any one of the preceding claims, wherein each of the combustion chambers has at least two corresponding intake valves and the at least two of the combustion chambers associated with the combustion cycle. A method of adjusting supply air in each combustion cycle so as to generate a high torque output or a low torque output by independently controlling an intake valve.

14. A method according to any one of the preceding claims, characterized in that all of the valves are actuated by one or more cam lobes connected to one or more camshafts.

15. The method according to any one of claims 1 to 14 , wherein each combustion chamber includes a first intake valve and a second intake valve, the method further comprising:
A method of operating the engine in a dynamic ignition level modulation manner during the selected combustion cycle and simultaneously opening and closing the first and second intake valves based on different timing cycles.

The method of claim 15 , wherein
The first intake valve operates based on one of an intake valve early close (EIVC) cycle and an intake valve late close (LIVC) cycle ;
The method wherein the second intake valve operates based on an Otto cycle.

A method according to any one of claims 1 to 16 ,
Each combustion chamber includes a first intake valve and a second intake valve;
When a combustion cycle is ignited with a high torque output, the first and second intake valves of the corresponding combustion chamber are independently controlled based on a high torque valve control scheme;
When a combustion cycle is ignited with a low torque output, the first and second intake valves of the ignition combustion chamber are controlled independently based on a low torque valve control scheme different from the high torque valve control scheme. Feature method.

The method of claim 17 , wherein
The high torque valve control scheme allows air to be supplied through the first and second intake valves during a selected combustion cycle;
The method wherein the low torque valve control scheme does not charge through the first intake valve during a selected combustion cycle.

The method of claim 17 , wherein
The high torque valve control scheme supplies air through the first intake valve instead of the second intake valve during the selected combustion cycle;
The high torque valve control scheme further operates the first intake valve based on an Otto cycle during the selected combustion cycle;
The low torque valve control scheme supplies air through the first and second intake valves during a selected combustion cycle;
The low torque valve control scheme further operates the first intake valve based on an Otto cycle during the selected combustion cycle, and based on an intake valve late close (LIVC) cycle during the selected combustion cycle. And operating the second intake valve.

The method of claim 17 , wherein
The high torque valve control scheme supplies air through the first intake valve instead of the second intake valve during a selected combustion cycle;
The high torque valve control scheme further operates the first intake valve based on an Otto cycle during the selected combustion cycle;
The low torque valve control scheme supplies air through the first and second intake valves during a selected combustion cycle;
The low torque valve control scheme further operates the first intake valve based on an Otto cycle during the selected combustion cycle and is based on an intake valve early closing (EIVC) cycle during the selected combustion cycle. And operating the second intake valve.

A method of controlling the operation of an internal combustion engine having a plurality of combustion chambers to transmit a desired output, each combustion chamber having at least one intake valve and at least one exhaust valve, the method comprising:
Operate the engine in a dynamic ignition level modulation scheme that ignites selected low combustion cycles with low torque output and ignites selected high combustion cycles with high torque output, with each combustion cycle at high or low torque output. Dynamically determining whether to ignite each ignition opportunity during operation of the engine;
The air supply to each ignition combustion cycle, see containing and adjusting based on whether the high or low torque output is selected for the ignition combustion cycle,
A method wherein the combustion cycle ignited at the low torque output ignites at a substantially brake-specific fuel consumption condition with respect to the combustion cycle .

An ignition controller used to control operation of an internal combustion engine having a plurality of combustion chambers to transmit a desired output, each combustion chamber having at least one intake valve and at least one exhaust valve, Ignition controller
An ignition level determination unit that identifies a low combustion cycle selected to ignite at a low torque output and a high combustion cycle selected to ignite at a high torque output, i.e., determining the high or low torque output during operation of the engine An ignition level determination unit configured to be performed at each ignition opportunity,
An ignition controller comprising: an ignition control unit configured to direct the operation of the intake valve so as to supply less air in the low torque output combustion cycle than in the high charge combustion cycle.

23. The ignition controller according to claim 22, wherein the ignition control unit is configured to indicate that a low torque output combustion cycle uses an intake valve early closing (EIVC) cycle for the high torque output combustion cycle. Features an ignition controller.

23. The ignition controller according to claim 22, wherein the ignition control unit is configured to indicate to use an intake valve late closing (LIVC) cycle for the high torque output combustion cycle for a low torque output combustion cycle. Features an ignition controller.

The ignition controller according to any one of claims 22 to 24,
Comprising an ignition ratio calculator configured to determine a desired effective ignition ratio that represents an ignition opportunity ratio that needs to be ignited at a reference output level to transmit the desired output ;
Ignition controller said ignition level determination unit is based at least in part on the effective ignition ratio, and determines the combustion cycle to be ignited in the combustion cycle and low power to ignite at high power.

26. The ignition controller according to any one of claims 22 to 25 , wherein each of the combustion chambers has at least two corresponding exhaust valves and the at least two in the combustion chamber associated with the combustion cycle. An ignition controller characterized in that the intake control in each combustion cycle is adjusted so that the ignition control unit generates a high or low torque output by independently controlling the intake valve.

27. The ignition controller according to any one of claims 22 to 26 , wherein each of the combustion chambers has at least two corresponding exhaust valves.

28. The ignition controller according to any one of claims 22 to 27 , wherein the ignition level determination module uses a sigma delta converter to determine a combustion cycle for igniting at a high output and a combustion cycle for igniting at a low output. Features an ignition controller.

29. The ignition controller of claim 28 , wherein the sigma delta converter is
Analog parts,
Digital parts,
With programmable logic,
An ignition controller, implemented using at least one of program instructions executed on a processor.

30. The ignition controller of any one of claims 22 to 29, wherein the ignition controller is in each low torque combustion cycle.
Supplying fuel to the corresponding combustion chamber, and
Further configured to burn in the corresponding combustion chamber such that a net torque is delivered by the low torque combustion cycle and thereby the corresponding combustion cycle does not stop during the low torque combustion cycle. Ignition controller.