Method for starting a multi-cylinder internal combustion engine
AssigneeRobert Bosch GmbH
InventorUdo Sieber
Life of this patent
Estimating the term…
Loading patent…
AssigneeRobert Bosch GmbH
InventorUdo Sieber
Estimating the term…
The invention relates to a method for starting a multi-cylinder internal combustion engine (1), in particular of a motor vehicle, in the forward direction, wherein the position of a piston (2) in a cylinder (3) of the engine (1) is ascertained, and fuel is injected into a combustion chamber (4) of the particular cylinder (3) whose piston (2) is in a working phase. To make it possible to start the engine reliably without an electric starter, independently of the position of the pistons (2) in the cylinders (3) before the starting process (14), it proposed that the engine (1) is first moved in the reverse direction, by the injection of fuel into a combustion chamber (4) of at least one cylinder (3) whose piston (2) is—viewed in the forward direction—in a compression phase, and the fuel compressed in the combustion chamber (4) of the at least one cylinder (3) is ignited, and the rotary motion in the reverse direction comes to a stop before the bottom dead center (UT) of the pistons (2) of the at least one cylinder (3) is reached, and that the engine (1) is then started in the forward direction.
A method for starting a multi-cylinder internal combustion engine (1), in particular of a motor vehicle, in the forward direction, wherein the position of a piston (2) in a cylinder (3) of the engine (1) is ascertained, and fuel is injected into a combustion chamber (4) of the particular cylinder (3) whose piston (2) is in a working phase, characterized in that the engine (1) is first moved in the reverse direction, by the injection of fuel into a combustion chamber (4) of at least one cylinder (3) whose piston (2) is—viewed in the forward direction—in a compression phase, and the fuel compressed in the combustion chamber (4) of the at least one cylinder (3) is ignited, and the rotary motion in the reverse direction comes to a stop before the bottom dead center (UT) of the pistons (2) of the at least one cylinder (3) is reached, and that the engine (1) is then started in the forward direction.
A control element, in particular a read-only memory or flash memory, for a control unit (12) of an internal combustion engine (1), in particular of a motor vehicle, in which a program is stored that can be run on a computing device, in particular a microprocessor, and is suitable for performing a method of one of the foregoing claims.
Dependencies are inferred from the claim text.