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US 4,160,916 AGranted
Engine stop-start electrical circuit
AssigneeCaterpillar Tractor Co.
InventorStamos I. Papasideris
Life of this patent
Estimating the term…
Abstract
An electrical circuit for use with an engine having an alternator has a relay to control a solenoid to properly shut down a diesel engine and includes openable and closable contacts for supplying power to another portion of the circuit, it being ensured that such contacts remain closed when either the vehicle key is in the on position or there exists an alternator output.
Claims9
An electrical circuit for controlling an engine, comprising:
- (a) electrical power source means for starting and turning off the engine;
- (b) an engine shut-off solenoid being energizable only after turning off the engine;
- and
- (c) means for generating current on start-up of the engine and after turning off the engine and for energizing said shut-off solenoid with said current that is generated after the turning off the engine.
1 more element
An electrical circuit for controlling an engine, comprising:
- (a) electrical power source means for starting and turning off the engine;
- (b) means for generating current on start-up of the engine and after turning off the engine;
- (c) energizable means for shutting off the engine;
- (d) first relay means for controlling the closing of a path from said current generating means to said energizable means and said power source means in response to turning off the engine;
- and
- (e) second relay means for closing the path from said current generating means to said energizable means and said power source means in response to the current being generated after turning off the engine.
3 more elements
Dependencies are inferred from the claim text.