US 10,871,119 B2Granted

Motor vehicle having active shuffle reduction

AssigneeFord Global Technologies, LLC

InventorsNicholas Dashwood Crisp, Michael Rowland, Martin Jansz

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Abstract

A motor vehicle is disclosed having an internal combustion engine and an integrated starter-generator drivingly connected to a crankshaft of the internal combustion engine by a belt drive. Operation of the internal combustion engine and the integrated starter-generator is controlled by an electronic controller in response to a number of inputs. The electronic controller is arranged to use the internal combustion engine and the integrated starter-generator to actively reduce driveline shuffle in one of a number of shuffle reduction modes that are selected by the electronic controller based on at least the current rotational speed of the internal combustion engine.

Claims17

Dependent claims

A system for a motor vehicle, comprising:

an engine driving a multi-speed transmission;
an integrated starter-generator driveably connected to a crankshaft of the engine;
and
an electronic controller storing executable instructions in non-transitory memory, that, when executed, cause the electronic controller to:
select a shuffle reduction mode from a plurality of shuffle reduction modes based at least partly on a rotational speed of the crankshaft of the engine, the plurality of shuffle reduction modes including a first shuffle reduction mode that utilizes only the integrated starter-generator to reduce driveline shuffle, a second shuffle reduction mode that utilizes the engine and the integrated starter-generator in combination to reduce driveline shuffle, and a third shuffle reduction mode that utilizes the engine supplemented by the integrated starter-generator to reduce driveline shuffle;
and
operate the engine and the integrated starter-generator in the selected shuffle reduction mode.

4 more elements

A method for reducing driveline oscillations in a vehicle, comprising:

selecting between a first shuffle reduction mode, a second shuffle reduction mode, and a third shuffle reduction mode based on at least a rotational speed of an engine of the vehicle;
applying both positive torque and negative torque to a crankshaft of the engine via an integrated starter-generator (ISG) to reduce the driveline oscillations when the first shuffle reduction mode is selected, the ISG rotationally coupled to the crankshaft;
applying positive torque to the crankshaft via the engine and negative torque to the crankshaft via the ISG to reduce the driveline oscillations when the second shuffle reduction mode is selected;
and
applying both positive torque and negative torque to the crankshaft via the engine to reduce the driveline oscillations when the third shuffle reduction mode is selected.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/270,455Filed 7 Feb 2019
Priority: GB 1802298.813 Feb 2018
Published: US 2019/0249617 A115 Aug 2019
Granted: 22 Dec 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification23 codes

F02D 41/1498
With detection of the mechanical response of the engine: measuring engine roughness
B60K 6/485
Parallel type: motor-assist type
B60W 10/06
Including control of propulsion units: including control of combustion engines
B60W 10/08
Including control of propulsion units: including control of electric propulsion units, e.g. motors or generators

Family

US 2019/0249617 A1Pre-grant publication · published 15 Aug 2019
US 10,871,119 B2This patent

From the US filing history. Foreign family members aren’t listed.

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