Back to results
US 11,746,722 B2Granted
Method of control of fuel temperature injected in combustion engine
AssigneeRobert Bosch Limitada
InventorsFernando Lepsch, Fernando de Oliveira, Jr., Marcello Francisco Brunocilla
Life of this patent
Estimating the term…
Abstract
Method of controlling the temperature of fuel injected into a combustion engine to enable a reduction in the amount of fuel injected into engines which may be powered both by pure gasoline and by ethanol or by any biofuel mixture.
Claims5
A method of control of fuel temperature injected in a combustion engine having a fuel, the combustion engine comprising:
- an engine control unit (9) in the combustion engine,
- at least one fuel-heating device (3) positioned in contact with the fuel in a fuel rail (1);
- at least one fuel-heating control unit (6) connected by means of at least one data connection to the engine control unit (9), the at least one fuel-heating control unit (6) electrically connected to the at least one fuel-heating device (3), where the at least one fuel-heating control unit (6) controls the operation of the at least one fuel-heating device (3);
- the method comprising the successive steps of:
- measuring the temperature of the fuel (Tc) downstream of the at least one fuel-heating device (3);
- reading a target temperature of the fuel (Ta) downstream of the at least one fuel-heating device (3);
- comparing the temperature of the fuel (Tc) downstream of the at least one fuel-healing device (3) with the target temperature of the fuel (Ta) downstream of the at least one fuel-heating device (3);
- detecting an input from an acceleration pedal;
- calculating a power (Paq) necessary to be used in the at least one fuel-heating device (3) so that the temperature of the fuel (Tc) downstream of the at least one fuel-heating device (3) is maintained during an anticipated variation in a flow rate of the fuel injected in the combustion engine, the anticipated variation in the flow rate being determined based on the input from the acceleration pedal and corresponding to a variation in a speed of the combustion engine;
- applying the calculated power (Paq) to the at least one fuel-heating device (3), the application of the calculated power (Paq) controlled by the at least one fuel-heating control unit (6);
- comparing the temperature of the fuel (Tc) downstream of the at least one fuel-healing device (3) with the target temperature of the fuel (Ta).
8 more elements
Dependencies are inferred from the claim text.