Internal combustion engine control device and internal combustion engine control system
A technology of control device and internal combustion engine, applied in the direction of engine control, internal combustion piston engine, valve device, etc., can solve the problems of time-consuming, poor action response, and lack of restartability.
Inactive Publication Date: 2011-05-04
HITACHI AUTOMOTIVE SYST LTD
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Problems solved by technology
Therefore, at the time of starting, it is necessary to greatly operate the phase changing mechanism, but this phase changing mechanism has poor operational responsiveness when rotating at an extremely low speed, and it takes time until the initial explosion of the internal combustion engine.
As a result, good restartability cannot be obtained
Method used
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no. 1 approach
[0047] The first embodiment shows an embodiment applied to the intake valve side of a so-called four-cycle four-cylinder internal combustion engine of gasoline specification.
[0048] First, based on figure 1 The outline of the overall structure of the internal combustion engine of the present invention will be described. This internal combustion engine can perform a so-called idling stop, and is applicable to a so-called hybrid vehicle.
[0049] It includes: a piston 01 slidably installed up and down in the cylinder bore formed in the cylinder block SB; an intake port IP and an exhaust port EP respectively formed in the cylinder head SH; and a slidably provided in the cylinder head SH , and a pair of intake valves 4, 4 and exhaust valves 08, 08 for each cylinder that open and close the opening ends of the intake port IP and exhaust port EP.
[0050] The piston 01 is connected to a crankshaft 02 via a connecting rod 03, and a combustion chamber 04 is formed between the top s...
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The present invention relates to an internal combustion engine control device and an internal combustion engine control system, capable of obtaining good restarting performance of the internal combustion engine and trying to reducd vibration when a crank begins to rotate. In steps (1-6), when the engine stops, the crank is controlled such that intake valves of all cylinders are closed, and the intake valves are controlled at a least working angle (D1). In a step (7), a condition of restarting the engine is provided. In steps (9, 11), when a temperature (T) of the internal combustion engine is more than a first temperature (T1) and a second temperature (T2), a great working angle (D3) of the intake valve is configured as a start target working angle in a step (12). In step (14), the working angle of the intake valve is switched into the start target working angle (Dt), then, in step (15), the crank starts to rotate, when the crank reaches the target working angle (Dt) in step (16), a complete combustion and explosion control is performed to fuel injection and ignition in step (17).
Description
technical field [0001] The present invention mainly relates to a control device and a control system capable of improving the restartability of a multi-cylinder internal combustion engine. Background technique [0002] As a conventional control device for an internal combustion engine, for example, a control device described in Patent Document 1 below is known. [0003] The outline will be described. This control device controls the following mechanisms. That is, the lift changing mechanism that can continuously change the valve lift amount and operating angle of the intake valve as a variable valve mechanism, and the lift changing mechanism that can change the intake valve. A phase change mechanism that changes the central phase of the lift and operating angle to the advanced side and the retarded side. [0004] Moreover, when the intake drive shaft rotates in conjunction with the crankshaft, the swing cam swings through the lift changing mechanism, and a swing cam that is...
Claims
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IPC IPC(8): F02D13/00F01L13/08F01L1/34F01L9/02F01L9/04F01L9/10F01L9/22
CPCF01L1/3442F01L13/0021F01L13/0026F01L2001/34453F02D13/0207F02D13/0265F01L2001/34483Y02T10/12
Inventor 中村信
Owner HITACHI AUTOMOTIVE SYST LTD