Method for managing the temperature of fuel injected into an internal-combustion engine
AssigneeRobert Bosch Limitada
InventorsFernando Lepsch, Marcello Francisco Brunocilla
Life of this patent
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Abstract
Method of temperature management of fuel injected in internal combustion engines (1) applicable to said system, which takes into account the measurement of the fuel flow to be injected and one or more dynamic data of the engine demand level (1) in an immediate current instant, providing accuracy in the transformation of electrical energy into heat by controlling the fuel heating temperature and, consequently, great precision in the reduction of pollutant gases, without deterioration of the vehicle's energy balance (battery).
Claims10
A method of managing the temperature of fuel injected into internal combustion engines from a mixture of an air flow and fuel applicable to a vehicle, said engines having
- at least one line for transporting fuel (11) which carries a quantity of at least one fuel to be injected;
- at least one fuel heater device (13) provided with a heating chamber;
- at least one fuel heating control device (3) associated with an electronic control device (2) and associated with the at least one fuel heater device (13);
- said method comprising:
- reading at least one vehicle parameter (10) and an injected fuel flow value in a first instant;
- reading at least one vehicle parameter (10) and an injected fuel flow value in a current instant after the first instant;
- determining the fuel flow gradient at the current instant;
- determining an amount of energy required for the fuel to reach a target fuel temperature value at the current instant, according to the fuel flow gradient at the current instant;
- performing an action between supplying and withdrawing the amount of energy necessary for the injected fuel to reach the target fuel temperature;
- carrying out the mixing of the air and fuel flow;
- checking heated fuel temperature against current target temperature;
- performing an action.
Dependencies are inferred from the claim text.