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Starting system and method of internal combustion engine

A technology of starting system and internal combustion engine, which is applied in the direction of engine starting, internal combustion piston engine, starting device with mechanical power storage, etc., and can solve the problem that the engine cannot be started with high reliability

Inactive Publication Date: 2008-06-11
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this case, the engine cannot start properly with high reliability

Method used

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  • Starting system and method of internal combustion engine
  • Starting system and method of internal combustion engine
  • Starting system and method of internal combustion engine

Examples

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no. 1 example

[0025] FIG. 1 schematically shows a starting system of an internal combustion engine constructed in accordance with a first embodiment of the invention. The flowchart shown in FIG. 2 shows the engine stop control and start control performed by the engine starting system of the first embodiment; FIG. 3 schematically shows when the engine in the engine starting system of the first embodiment is stopped Observed state of piston and valves in some cylinders; Figure 4 schematically shows fuel injection timing and ignition timing for cylinders stopped in the second half of the compression stroke. FIG. 5 schematically shows fuel injection timing and ignition timing of cylinders stopped in the first half of the compression stroke.

[0026] The internal combustion engine to which the starting system of the first embodiment is applied is an in-cylinder direct-injection four-cylinder engine 10 as shown in FIG. 1 . The engine 10 includes a cylinder block 11 and a cylinder head 12 mounted...

no. 2 example

[0060] The flow chart shown in FIG. 6 shows engine stop control and start control performed by the starting system of the internal combustion engine as the second embodiment of the present invention. FIG. 7 schematically shows fuel injection timing and ignition timing of cylinders stopped in the first half of the compression stroke. The overall construction of the engine starting system of this embodiment is basically the same as that of the first embodiment described above, and will be described below with reference to FIG. 1 . In the following description, the same reference numerals that have been used in the description of the first embodiment will be used to describe structurally and / or functionally corresponding components, which will not be described in detail below.

[0061] As shown in FIG. 1 , similar to the engine starting system of the first embodiment described above, the engine starting system of the second embodiment has a function of automatically stopping the ...

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Abstract

Upon a start of the internal combustion engine (10) , a starting system causes an injector (41) to inject fuel into and causes an ignition plug (45) to ignite a mixture in a cylinder stopped in the expansion stroke, and causes the injector (41) to inject fuel into and causes the ignition plug (45) to ignite a mixture at or in the vicinity of the compression TDC in a compression-stroke cylinder that follows the expansion-stroke cylinder. When the engine coolant temperature is equal to or higher than a predetermined temperature, and when the cylinder stopped in the compression stroke is stopped in the first half of the compression stroke, the starting system retards the fuel injection timing for the compression-stroke cylinder.

Description

technical field [0001] The present invention relates to a starting system and a starting method of an internal combustion engine in which fuel injection and ignition are performed in a cylinder in an expansion stroke so that starting is performed by using combustion energy formed by combustion of an air / fuel mixture formed in the expansion stroke cylinder engine. Background technique [0002] In recent years, as a method of reducing or controlling exhaust emissions and improving fuel economy, a variety of technical solutions have been proposed for automatically stopping the engine when the vehicle is parked in an idling state, and automatically restarting the engine to start smoothly. vehicle. For these techniques, if it takes an undesirably long time to restart the engine, drivability of the vehicle deteriorates due to a delay in response to the driver's start intention, and therefore, it is important to restart the engine quickly. Generally, a starter is used to start th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02N11/08F02N17/00F02D41/34F02D41/02F02D41/06F02D45/00F02N9/02F02N15/00F02N99/00
CPCF02N99/006F02N11/0814Y02T10/48F02D41/065F02N99/004F02D41/008F02D41/401F02D2200/0612Y02T10/40F02D41/34F02N11/08F02N99/00
Inventor 小岛进
Owner TOYOTA JIDOSHA KK