Vehicle cold start system
A system is described for improving lubrication of an internal-combustion engine having an ignition, starter motor, battery system and a mechanical-type oil pump, the system comprising: an electrically operated oil pump for connection in liquid communication with an oil sump of an engine and having an electrical motor; first conduit means for connecting pressurized oil outlet of the oil pump to oil galleys of the engine to establish oil flow communication with the oil galleys; electrical time-delay relay means for connection to the ignition and battery system of the engine and to the motor of the oil pump to energize motor for a predetermined time period after the ignition is initially turned on but before the starter motor is activated. This is done by allowing battery current of the battery system to flow through a contact internal of the relay means to energize the electrical motor and, after the first predetermined time period has lapsed, preventing the flow of current through the internal contact; one-way valve means mounted to the oil pump to prevent back-flow of oil into the pressurized oil outlet; and bypass means connecting the pressurized oil outlet of the oil pump to inlet of the pump when the one-way valve means is closed or flow from the pressurized oil outlet is restricted.
- Assignee:
- Lubrication Research, Inc., San Jose, CA
- Patent Number(s):
- US 4628877
- OSTI ID:
- 7140857
- Resource Relation:
- Patent File Date: Filed date 11 Jul 1985
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
INTERNAL COMBUSTION ENGINES
LUBRICATION
ELECTRIC BATTERIES
ELECTRIC MOTORS
FLUID FLOW
IGNITION SYSTEMS
LUBRICATING OILS
PRESSURIZING
PUMPS
RELAYS
SOLENOIDS
START-UP
VALVES
CONTROL EQUIPMENT
ELECTRIC COILS
ELECTRICAL EQUIPMENT
ELECTROCHEMICAL CELLS
ENGINES
EQUIPMENT
FLOW REGULATORS
HEAT ENGINES
LUBRICANTS
MOTORS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
330100* - Internal Combustion Engines