Engine starter protecting device

Patent · Tue Nov 18 00:00:00 EST 1986

OSTI ID:6874433

Yabunaka, K; Hamano, I; Morishita, A; Akae, Y; Nishimura, Y; Tanaka, T

This patent describes an engine starter protecting device for an engine starter of a type comprising a starter motor for turning an engine, an electromagnetic switch for controlling the starter motor, a key switch for controlling the electromagnetic switch, and a battery for electrically energizing the starter motor and the electromagnetic switch. The device comprises a first switch operatively associated with the engine, which is closed when the engine is disengaged from wheels and otherwise opened, and second switch means operatively associated with the engine, which is opened when a speed of rotation of the engine is at or above an predetermined value and otherwise closed. The first switch and second switch means are connected in series with one another and coupled between the battery and the electromagnetic switch for controlling actuation of the electromagnetic switch; wherein the second switch means comprises at least two detectors selected from a group consisting of an ignition detector which operates when the frequency of engine ignition pulses is at a predetermined value or higher, an oil pressure detector which operates when an engine lubrication oil pressure is at a predetermined value or higher, a vacuum pressure detector which operates when a pressure of intake air to the engine is at a predetermined value or lower, and a charging detector which operates when an output voltage of an alternator is at a predetermined value or higher. Relay coils are individually coupled to outputs of the detectors, each of the coils being energized when its associated detector operates, and normally closed relay switches are connected in series and individually associated with an opened by the relay coils when energized.

• Assignee: Mitsubishi Denki Kabushiki Kaisha, Tokyo
• Patent Number(s): US 4622930
• OSTI ID: 6874433
• Resource Relation: Patent File Date: Filed date 21 Jun 1985
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
ENGINES
IGNITION SYSTEMS
AIR FLOW
ALTERNATORS
ELECTRIC BATTERIES
ELECTRIC COILS
ELECTRIC MOTORS
ELECTRIC POTENTIAL
ELECTROMAGNETS
FREQUENCY DEPENDENCE
LUBRICATING OILS
PRESSURE GAGES
PULSES
RELAYS
SWITCHES
ELECTRIC GENERATORS
ELECTRICAL EQUIPMENT
ELECTROCHEMICAL CELLS
EQUIPMENT
FLUID FLOW
GAS FLOW
LUBRICANTS
MAGNETS
MEASURING INSTRUMENTS
MOTORS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
330603* - Vehicle Design Factors- Engine System