US 6,464,026 B1Granted

Control system for parallel hybrid vehicle

OwnerJohn Horsley, Peter Monkhouse +2inventors

InventorsJohn Horsley, Peter Monkhouse, Dan Rendell, Donald E. Panoz

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Abstract

A vehicular power system for powering a parallel hybrid vehicle having an internal combustion engine, electric motor/generator, ESD source, and an inverter includes a set of demand parameters for controlling the amount of flow of current between the ESD source and the electric motor/generator. The demand parameters are utilized by the inverter for controlling this current. A set of limiting parameters which indicate that the application of full demand would jeopardize the operational environment or is unwarranted by utilizing the limit of full demand. The demand parameters control the amount of current to the electric motor/generator from the ESD during an electric motor/generator assist mode and from the electric motor/generator to the ESD when the battery is acting as a generator for recharging the ESD. Additionally, a plurality of demand parameters may exist providing options for manipulating the control of the electric motor/generator depending upon the operating environment of the vehicle.

Claims2

Dependent claims

A vehicular power system for powering a parallel hybrid vehicle, the parallel hybrid including an internal combustion engine powered by fossil fuel, an electric motor/generator, and a battery source for powering the electric motor/generator, a inverter regulates the flow of current from the battery source to the electric motor/generator, said vehicle power system comprising:

a first demand map providing a first set of demand parameters for controlling the current between said battery and said electrical electric motor/generator corresponding to the operation of said vehicle in a first external operating environment simultaneously utilizing both said internal combustion engine and said electric motor to power said hybrid vehicle;
a second demand map having a second set of demand parameters for controlling the amount of current between said battery and said electric motor/generator corresponding to the operation of said vehicle in a second external operating environment simultaneously utilizing both said internal combustion engine and said electric motor to power said hybrid vehicle;
said first and second demand map being independently selectable from one another and;
a selector for selecting between said first and second demand maps depending upon an external operating environment.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 09/169,611Filed 9 Oct 1998
Granted: 15 Oct 2002
Term ends: Not estimatedThe source records don’t support an estimate.

Classification47 codes

B60L 58/14
Responding to state of charge [SoC]: preventing excessive discharging
B60K 6/48
Characterised by the architecture of the hybrid electric vehicle: parallel type
B60K 28/16
Responsive to conditions relating to the vehicle: responsive to, or preventing, spinning or skidding of wheels
B60L 3/003
Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train: relating to inverters