US 2017/0184039 A1 · CONTROL OF A TORQUE DEMANDED FROM AN ENGINE

Abstract

A method and a system for control of a torque Tqdemand requested from an engine in a vehicle, wherein the engine provides a dynamic torque Tqfw in response to the torque Tqdemand. Control of the requested torque Tqdemand is performed such that the control provides a desired value Tqfw_req for the dynamic torque and/or a desired derivative Tqfw_req for the dynamic torque. This is achieved by basing the control on at least one current value Tqfw_pres for the dynamic torque, on one or several of the desired value Tqfw_req and the desired derivative Tqfq_req for the dynamic torque, and on a total delay time tdelay_total elapsing from determination of at least one parameter value, to when a change of the dynamic torque Tqfw based on the determined at least one parameter value, has been effected.

Claims22

Dependent claims

A system for control of a torque Tqdemand requested from an engine in a vehicle so that the engine provides a dynamic torque Tqfw for an output shaft of the engine in response to the requested torque Tqdemand and the dynamic torque Tqfw for the output shaft of the engine is related to a dynamic wheel torque Tqwheel, which is provided to at least one driving wheel of the vehicle via a power train of the vehicle including the engine:

the system for control of a torque demand Tqdemand requested from the engine comprises:
an execution device configured to perform a control of the requested torque Tqdemand, based on at least:
a current value Tqfw_pres for the dynamic torque;
one or several of a desired value Tqfw_req and a desired derivative {dot over (T)}qfw_req for the dynamic torque;
and
a total delay time tdelay_total required from a determination of at least one parameter value until a change of the dynamic torque Tqfw is completed, based on the determined at least one parameter value;
and
whereby the execution device is configured to provide, through the control of the requested torque Tqdemand, one or several of the desired value Tqfw_req and the desired derivative {dot over (T)}qfw_req for the dynamic torque.

5 more elements

A method in a vehicle for control of a torque Tqdemand requested from an engine, wherein;

the method comprising:
providing a dynamic torque Tqfw to an output shaft of the engine in response to a requested torque Tqdemand, wherein the dynamic torque Tqfw is related through the gear ratio i to the dynamic wheel torque Tqwheel provided to an at least one driving wheel of the vehicle by a powertrain;
controlling the requested torque Tqdemand at least based on:
a current value Tqfw_pres for the dynamic torque;
one or several of a desired value Tqfwreq for, and a desired derivative {dot over (T)}qfw_req for the dynamic torque;
determining at least one parameter value;
a total delay time tdelay_total required from the determination of at least one parameter value until a change of the dynamic torque Tqfw is complete, based on the determined at least one parameter value;
wherein the control of the requested torque Tqdemand achieves one or more of the desired value Tqfw_req and the desired derivative {dot over (T)}qfw_req for the dynamic torque.

5 more elements

Dependencies are inferred from the claim text.

Control of a torque demanded from an engine

Life of this patent

Control of a torque demanded from an engine

Life of this patent

Abstract

Claims22