Engine torque calculation
AssigneeInternational Engine Intellectual Property Company, LLC
InventorAdam C. Lack
Life of this patent
Estimating the term…
Abstract
A torque calculator and method for providing real time data that measures net torque output of a running engine in a motor vehicle. Gross torque production is calculated using engine speed and fueling data. Torque losses due to accessories, pumping, and friction are calculated and subtracted from gross torque production, and inertial torque is also accounted for to yield engine net running torque. The engine net running torque data and engine speed data are processed according to a filter algorithm that compensates the engine net running torque data for engine speed. Transmission shifting is controlled by the speed-compensated engine net running torque.
Claims16
A torque calculation method for providing real time data that measures net torque output of a running engine at a rotating member of the engine, the method comprising:
- processing data that includes engine speed data and engine fueling data to create engine gross torque data for the running engine;
- processing data related to torque losses due to running of the engine to create engine running torque loss data;
- processing engine speed data to create engine acceleration and deceleration data;
- processing the engine acceleration and deceleration data with data defining a moment of inertia attributable to the rotating member and engine mechanism coupled to that member to create data measuring inertial torque;
- algebraically adding the inertial torque data to, and subtracting the engine running torque loss data from, the engine gross torque data to create engine net running torque data;
- and
- processing the engine net running torque data and engine speed data according to a filter algorithm that compensates the engine net running torque data for engine speed.
An internal combustion engine operating system comprising:
- a processor for providing real time data that measures net torque output of a running engine at a rotating member of the engine,
- wherein the engine processor operates:
- to process data that includes engine speed data and engine fueling data to create engine gross torque data for the running engine;
- to process data related to torque losses due to running of the engine to create engine running torque loss data;
- to process engine speed data to create engine acceleration and deceleration data;
- to process the engine acceleration and deceleration data with data defining a moment of inertia attributable to the rotating member and engine mechanism coupled to that member to create data measuring inertial torque;
- to algebraically add the inertial torque data to, and subtract the engine running torque loss data from, the engine gross torque data to create engine net running torque data;
- and
- to process the engine net running torque data and engine speed data according to a filter algorithm that compensates the engine net running torque data for engine speed.
A motor vehicle comprising:
- an internal combustion engine,
- a drivetrain coupled to the engine through a transmission, and
- an operating system comprising:
- a processor for providing real time data that measures net torque output of the running engine available for input to the transmission,
- wherein the engine processor operates:
- to process data that includes engine speed data and engine fueling data to create engine gross torque data for the running engine;
- to process data related to torque losses due to running of the engine to create engine running torque loss data;
- to process engine speed data to create engine acceleration and deceleration data;
- to process the engine acceleration and deceleration data with data defining a moment of inertia attributable to the rotating member and engine mechanism coupled to that member to create data measuring inertial torque;
- to algebraically add the inertial torque data to, and subtract the engine running torque loss data from, the engine gross torque data to create engine net running torque data;
- and
- to process the engine net running torque data and engine speed data according to a filter algorithm that compensates the engine net running torque data for engine speed;
- and
- the transmission shifting is controlled by the speed-compensated engine net running torque data.
Dependencies are inferred from the claim text.