METHOD FOR CONTROLLING INTERNAL COMBUSTION ENGINES IN HYBRID POWERTRAINS
First Claim
1. A method of controlling an internal combustion engine for a hybrid vehicle, wherein the internal combustion engine has a throttle and is controlled by an engine control module, the method comprising:
- monitoring a throttle intake pressure;
determining a maximum expected air mass from the monitored throttle intake pressure;
calculating a first torque capacity from a pressure model, wherein the throttle intake pressure is an input to the pressure model;
calculating a second torque capacity from an air mass model, wherein the maximum expected air mass is an input to the air mass model;
calculating a final torque capacity as a function of the first torque capacity and the second torque capacity;
calculating a manifold pressure request as a function of the final torque capacity; and
actuating the throttle as a function of the manifold pressure request.
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Abstract
A method of operating a hybrid powertrain having an internal combustion engine monitors a throttle intake pressure and calculates a first torque capacity from a pressure model using the throttle intake pressure as an input. The method determines a maximum expected air mass from the monitored throttle intake pressure and calculates a second torque capacity from an air mass model using the maximum expected air mass volume as an input. The method calculates a final torque capacity as a function of the first torque capacity and the second torque capacity, and sends the final torque capacity to the hybrid control processor. An engine control module receives a torque request calculated as a function of the final torque capacity. A manifold pressure request is calculated as a function of the torque request, and a throttle is actuated as a function of the manifold pressure request.
13 Citations
10 Claims
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1. A method of controlling an internal combustion engine for a hybrid vehicle, wherein the internal combustion engine has a throttle and is controlled by an engine control module, the method comprising:
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monitoring a throttle intake pressure; determining a maximum expected air mass from the monitored throttle intake pressure; calculating a first torque capacity from a pressure model, wherein the throttle intake pressure is an input to the pressure model; calculating a second torque capacity from an air mass model, wherein the maximum expected air mass is an input to the air mass model; calculating a final torque capacity as a function of the first torque capacity and the second torque capacity; calculating a manifold pressure request as a function of the final torque capacity; and actuating the throttle as a function of the manifold pressure request. - View Dependent Claims (2, 3, 4)
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5. A method of operating a hybrid powertrain controlled by a hybrid control processor, wherein the hybrid powertrain has an internal combustion engine with a throttle and is controlled by an engine control module, the method comprising:
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monitoring a throttle intake pressure; calculating a first torque capacity from a pressure model, wherein the monitored throttle intake pressure is an input to the pressure model; determining a maximum expected air mass from the monitored throttle intake pressure; calculating a second torque capacity from an air mass model, wherein the maximum expected air mass volume is an input to the air mass model; calculating a final torque capacity as a function of the first torque capacity and the second torque capacity; sending the final torque capacity to the hybrid control processor; receiving a torque request from the hybrid control processor, wherein the torque request is calculated as a function of the final torque capacity; calculating a manifold pressure request with the engine control module as a function of the torque request from the hybrid control processor; and actuating the throttle as a function of the manifold pressure request. - View Dependent Claims (6, 7, 8, 9, 10)
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Specification