Method for operating an internal combustion engine, especially an internal combustion engine in a motor vehicle
AssigneeRobert Bosch GmbH
InventorsGholamabas Esteghlal, Georg Mallebrein
Life of this patent
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Abstract
An internal combustion engine (1), especially for a motor vehicle, is described which is provided with an injection valve (13) with which the fuel, which is to be injected for a combustion, can be injected directly into a combustion chamber (4) during an intake phase and during a compression phase. A control apparatus is provided for open-loop control and/or closed-loop control of the fuel mass injected into the combustion chamber (4). A regeneration gas can be supplied by the control apparatus to the combustion chamber (4) during the intake phase.
Claims2
A method for operating an internal combustion engine including an engine of a motor vehicle, the engine having a combustion chamber and operating with an intake phase and a compression phase, the method comprising the steps of:
- supplying a total fuel mass (K) to said combustion chamber during a single combustion;
- supplying a first part (KA) of said total fuel mass (K) during said intake phase to said combustion chamber and injecting a second part (KV) of said total fuel mass (K) directly into said combustion chamber during said compression phase;
- causing said first part (KA) of said fuel mass (K) to comprise a third part (KAE) which is injected directly into said combustion chamber and a fourth part (KAR) in the form of regeneration gas which is supplied to said combustion chamber only during said intake phase;
- causing said second part (KV) of said total fuel mass (K) provided during said compression phase to be devoid of regeneration gas;
- reducing said third part (KAE) and increasing said fourth part (KAR);
- and,
- supplying so much regeneration gas to the combustion chamber that said third injected part (KAE) reaches a minimum value or zero.
A control element including a read-only-memory for a control apparatus of an internal combustion engine including an internal combustion engine for a motor vehicle, the engine having a combustion chamber and operating with an intake phase and a compression phase, said control element comprising a program stored thereon which can be run on a computer apparatus including a microprocessor to carry out the method having the steps of:
- supplying a total fuel mass (K) to said combustion chamber during a single combustion;
- supplying a first part (KA) of said total fuel mass (K) during said intake phase to said combustion chamber and injecting a second part (KV) of said total fuel mass (K) directly into said combustion chamber during said compression phase;
- causing said first part (KA) of said fuel mass (K) to comprise a third part (KAE) which is injected directly into said combustion chamber and a fourth part (KAR) in the form of regeneration gas which is supplied to said combustion chamber only during said intake phase;
- causing said second part (KV) of said total fuel mass (K) provided during said compression phase to be devoid of regeneration gas;
- reducing said third part (KAE) and increasing said fourth part (KAR);
- and,
- supplying so much regeneration gas to the combustion chamber that said third injected part (KAE) reaches a minimum value or zero.
Dependencies are inferred from the claim text.