Methods and apparatus to control engine speed of a power system
AssigneeIllinois Tool Works Inc.
InventorsAlan F. Smith, Richard Joyce
Life of this patent
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Abstract
Methods and apparatus to control engine speed of a power system are disclosed. An example power system includes: an engine; a generator configured to generate electrical power from mechanical power delivered by the engine; a switched-mode power supply configured to convert the electrical power from the generator to output power; and control circuitry configured to: monitor an input current to the switched-mode power supply; and in response to the input current exceeding a threshold current, incrementally increasing a speed of the engine.
Claims20
A power system, comprising:
- an engine;
- a generator configured to generate electrical power from mechanical power delivered by the engine;
- a switched-mode power supply configured to convert the electrical power from the generator to output power;
- and
- control circuitry configured to:
- monitor an input current to the switched-mode power supply;
- and
- in response to the input current exceeding a threshold current, incrementally increasing a speed of the engine.
A power system, comprising:
- an engine;
- an air compressor configured to generate and store air pressure in an air storage tank based on mechanical power provided by the engine;
- and
- control circuitry configured to:
- monitor the air pressure in the air storage tank;
- determine a rate of air pressure change based on the monitoring of the air pressure;
- and
- in response to the rate of air pressure change satisfying a threshold rate, incrementally increasing a speed of the engine.
A power system, comprising:
- an engine;
- a generator configured to generate electrical power from mechanical power delivered by the engine;
- an air compressor configured to generate and store air pressure in an air storage tank using the electrical power or the mechanical power;
- a switched-mode power supply configured to convert the electrical power from the generator to output power;
- and
- control circuitry configured to:
- monitor the air pressure in the air storage tank;
- determine a rate of air pressure change based on the monitoring of the air pressure;
- monitor an input current to the switched-mode power supply;
- and
- in response to the input current exceeding a threshold current or the rate of air pressure change satisfying a threshold rate, incrementally increasing a speed of the engine.
Dependencies are inferred from the claim text.