Invention Grant
US08494742B2 Engine torque estimation systems and methods 有权
发动机转矩估计系统和方法

Engine torque estimation systems and methods
Abstract:
An engine control system for a vehicle includes a coefficients determination module and a braking torque estimation module. The coefficients determination module determines first and second torque estimation coefficients that are set based on a braking torque versus air per cylinder (APC) line. The coefficients determination module determines third, fourth, and fifth torque estimation coefficients that are set based on a maximum braking torque (MBT) spark timing versus APC line. The braking torque estimation module estimates a braking torque of an engine based on APC, spark timing, and the first, second, third, fourth, and fifth torque estimation coefficients.
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