System and method to control the operation of a transmission using engine fuel consumption data
First Claim
1. A method of controlling the operation of a vehicle transmission operatively connected to an engine having operating characteristics and operatively connected to a transmission control module having access to a memory, the method comprising:
- receiving fuel consumption data for an engine, wherein the fuel consumption data identifies a range of operating characteristics of the engine from a minimum value to a maximum value;
converting the fuel consumption data for the engine to data representative of engine torque data with respect to engine efficiency loss data representative of the engine operating characteristics;
generating a set of equations to characterize the engine efficiency loss data, wherein the set of equations is based on a curve fitting of the engine efficiency loss data and the engine torque data;
storing the set of equations in the memory;
accessing the set of equations stored in memory with the transmission control module; and
using the accessed set of equations to modify the operation of the transmission.
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Accused Products
Abstract
A system and method of controlling the operation of a transmission using fuel consumption data. The system and method includes controlling the operation of a vehicle transmission which is operatively connected to an engine having operating characteristics and operatively connected to a transmission control module having access to a memory. Fuel consumption data for an engine is converted to engine efficiency loss data representative of the engine operating. A set of equations is determined to provide a pattern representative of the operating characteristics the engine. A transmission controller using the pattern determines a prospective operating condition of the transmission to provide fuel efficient operation of the engine.
25 Citations
20 Claims
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1. A method of controlling the operation of a vehicle transmission operatively connected to an engine having operating characteristics and operatively connected to a transmission control module having access to a memory, the method comprising:
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receiving fuel consumption data for an engine, wherein the fuel consumption data identifies a range of operating characteristics of the engine from a minimum value to a maximum value; converting the fuel consumption data for the engine to data representative of engine torque data with respect to engine efficiency loss data representative of the engine operating characteristics; generating a set of equations to characterize the engine efficiency loss data, wherein the set of equations is based on a curve fitting of the engine efficiency loss data and the engine torque data; storing the set of equations in the memory; accessing the set of equations stored in memory with the transmission control module; and using the accessed set of equations to modify the operation of the transmission. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A transmission system configured to drive a drive assembly of a vehicle in response to an engine output shaft of an engine responding to a throttle command, the transmission assembly comprising:
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a transmission including an input configured to be coupled to the engine output shaft and an output configured to drive the drive assembly; a memory configured to store one or more engine patterns, wherein each of the one or more stored engine patterns represents the operating characteristics of the engine and is based on a curve fitting of engine efficiency loss data and engine torque data; and a transmission controller operatively coupled to the transmission and to the memory, the transmission controller configured to execute stored program instructions to; determine at least one of engine speed and engine torque from the received throttle command; determine a current operating condition of the transmission; access the memory to retrieve one of the one or more stored engine patterns; determine an updated operating condition of the transmission using the accessed engine pattern and the determined at least one of the engine speed and the engine torque; and modify the current operating condition of the transmission to an updated operating condition of the transmission based on the determined updated operating condition of the transmission. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification