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US 8,090,520 B2Granted
Fuel life monitor and engine management for plug-in hybrid electric vehicles
AssigneeGM Global Technology Operations LLC
InventorsEdward D. Tate, Jr., Mark A. Theobald
Life of this patent
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Abstract
An engine management system for a hybrid vehicle may include a hybrid vehicle controller that selects a power source to be one of an electric propulsion system and a combustion engine. The hybrid vehicle controller may include an engine operation module configured to determine when operation of the combustion engine is required based on a predetermined set of operating parameters associated with the combustion engine.
Claims10
An engine management system for a hybrid vehicle, comprising:
- a control module that selects a power source to be an electric propulsion system during a first period and a combustion engine during a second period, the control module including an engine operation module configured to determine when operation of the combustion engine is required based on a predetermined set of operating parameters associated with the combustion engine, the predetermined set of operating parameters being related to characteristics of a fuel system of the combustion engine based on non-operation of the combustion engine.
Dependencies are inferred from the claim text.