1) Inter-source hybrid bus structure system to convert the electrical energy from multiple sources to grid compliant AC voltage.
2) The system in claim 1 further includes multiple controllers that pump their own sources energy to inter-source bus.
3) The controllers of claim 2 have no voltage output regulation function.
4) The controllers of claim 3 pump the maximum available power from its source to the DC bus.
5) The controllers of claim 4 can disable its own boosting circuit in the case of inter-source voltage higher than desired level.
6) The system in claim 1 further includes inverters that convert inter-source bus DC voltage to grid compliant AC voltage.
7) The inverters in claim 6 output available power based on maintaining inter-source bus voltage at a desired level.
8) The inverters in claim 7 will limit their output power level to a pre-set maximum level in the case of combined inter-source capacity higher than desired level.
9) The inverters in claim 7 will communicate to each other about their own output level relative to individual capacities through the inter-source bus DC with a heart beat signal.
10) The inverters in claim 9 will coordinate the output level of each inverter to maintain maximum output efficiency based on a pre-set profile.
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. A control system for a homogeneous charge compression ignition (HCCI) engine, the control system comprising:
a first module that determines a load on the HCCI engine when the HCCI engine is operating in an HCCI combustion mode;
a second module that controls torque generated by the HCCI engine based on the determined load and a predetermined threshold, wherein the second module controls the torque generated by the HCCI engine by controlling fueling of the HCCI engine; and
a third module that generates a torque reserve when the HCCI engine is operating in the HCCI combustion mode by operating the HCCI engine at sub-optimal operating conditions.
2. The control system of claim 1, wherein when the determined load is greater than the predetermined threshold, the second module increases the torque generated by the HCCI engine by controlling airflow and at least one of fuel mass and fuel injection timing.
3. The control system of claim 2, wherein the second module controls airflow by controlling intake and exhaust valve timing via intake and exhaust cam phasers, respectively.
4. The control system of claim 1, wherein when the determined load is less than the predetermined threshold, the second module controls the torque generated by the HCCI engine by controlling at least one of fuel mass and fuel injection timing.
5. The control system of claim 1, wherein the second module increases torque generated by the HCCI engine by an amount less than or equal to the torque reserve.
6. The control system of claim 1, wherein a load increase on the HCCI engine is a result of at least one of (i) activating an air conditioning (NC) compressor, (ii) activating a power steering (PS) pump, and (iii) shifting a transmission.
7. The control system of claim 1, wherein a load increase on the HCCI engine is a result of an end of a deceleration fuel cutoff (DECO) event.
8. The control system of claim 1, wherein the second module increases the torque generated by the HCCI engine during engine speed control.
9. The control system of claim 1, wherein when the HCCI engine is operating in a mixed combustion mode, a fourth module controls torque generated by the HCCI engine by controlling spark timing in the HCCI engine.
10. A method for controlling a homogeneous charge compression ignition (HCCI) engine, the method comprising:
determining a load on the HCCI engine when the HCCI engine is operating in an HCCI combustion mode; and
controlling torque generated by the HCCI engine based on the determined load and a predetermined threshold, wherein the torque generated by the HCCI engine is controlled by controlling fueling of the HCCI engine; and
generating a torque reserve when the HCCI engine is operating in the HCCI combustion mode by operating the HCCI engine at sub-optimal operating conditions.
11. The method of claim 10, further comprising airflow and at least one of fuel mass and fuel injection timing to increase the torque generated by the HCCI engine when the determined load is greater than the predetermined threshold.
12. The method of claim 11, further comprising controlling intake and exhaust valve timing via intake and exhaust cam phasers, respectively, to control airflow.
13. The method of claim 10, further comprising controlling at least one of fuel mass and fuel injection timing to control torque generated by the HCCI engine when the determined load is less than the predetermined threshold.
14. The method of claim 10, wherein increasing the torque generated by the HCCI engine includes increasing the torque generated by the HCCI engine by an amount less than or equal to the torque reserve.
15. The method of claim 10, wherein a load increase on the HCCI engine is a result of at least one of (i) activating an air conditioning (AC) compressor, (ii) activating a power steering (PS) pump, and (iii) shifting a transmission.
16. The method of claim 10, wherein a load increase on the HCCI engine is a result of an end of a deceleration fuel cutoff (DFCO) event.
17. The method of claim 10, further comprising increasing the torque generated by the HCCI engine during engine speed control.
18. The method of claim 10, wherein further comprising controlling torque generated by the HCCI engine by controlling spark timing in the HCCI engine when the HCCI engine is operating in a mixed combustion mode.