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A method of operating an internal combustion engine coupled in a hybrid powertrain, the method comprising of extracting waste energy from a component of an electrical power system of the hybrid powertrain, and adjusting intake air temperature during homogeneous charge compression ignition operation

A method of operating an internal combustion engine coupled in a hybrid powertrain, the method comprising of extracting waste energy from a component of an electrical power system of the hybrid powertrain, and adjusting intake air temperature during homogeneous charge compression ignition operation of the engine by using said extracted waste energy.

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I claim: 1. A method of operating an internal combustion engine coupled in a hybrid powertrain, comprising: extracting thermal and electrical waste energy from components of an electrical power system of the hybrid powertrain; and during HCCI operation: adjusting intake air temperature of the engin

I claim: 1. A method of operating an internal combustion engine coupled in a hybrid powertrain, comprising: extracting thermal and electrical waste energy from components of an electrical power system of the hybrid powertrain; and during HCCI operation: adjusting intake air temperature of the engine by coordinating said waste energy extraction, the coordination including, when a battery is fully charged, first using the extracted electrical waste energy to power an electrical heater in an engine intake. 2. The method according to claim 1 wherein said components comprise an energy conversion device. 3. The method according to claim 1 wherein said components comprise an energy storage device. 4. The method according to claim 1 wherein said components comprise an electrical generator. 5. The method according to claim 1 wherein said components comprise a regenerative braking system. 6. The method according to claim 1 wherein said components comprise an engine electrical power generating system. 7. The method according to claim 1 wherein said coordinating further comprising coordinating the waste energy extraction and engine operation. 8. The method according to claim 1 wherein said extracting thermal and electrical waste energy from components of the electrical power system further comprises extracting excess electrical energy from an external plug-in. 9. An intake thermal management system for a hybrid charge compression ignition electric vehicle for adjusting engine intake air temperature, comprising: an electrical power system for a hybrid powertrain; a battery; an electrical heater for heating engine intake air; a heat exchanger device for extracting thermal waste energy of the electrical power system for heating the engine intake air; a regenerative braking system; and a control unit for coordinating, during HCCI operation, electrical and thermal waste energy extraction of the heat exchanger and the regenerative braking system, the coordination including, when the battery is fully charged, first using extracted electrical waste energy from the regenerative braking system to power the electrical heater. 10. The intake thermal management system according to claim 9, wherein the electrical heater is coupled to a device for generating electrical power from an engine output torque. 11. The intake thermal management system according to claim 9, wherein the electrical heater is coupled to a device for generating electrical power from regenerative braking. 12. The intake thermal management system according to claim 9 wherein the system further comprises a plug-in for charging the electrical power system.