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Method of stopping and restarting internal combustion engine with indirect injection

A technology for internal combustion engines and engines, which is applied to the starting of engines, internal combustion piston engines, and electric motors for engines, etc., and can solve problems such as pollution and out-of-synchronization of the first injection

Inactive Publication Date: 2010-02-03
PEZHO SITROEN AUTOMOBILS SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] [10] Furthermore, this procedure produces pollution, since the first injections in the pipes are not synchronized, the injections are made on all cylinders or almost all cylinders, the gasoline stock is released, with the possible loss of the catalyst and / or create pollution

Method used

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  • Method of stopping and restarting internal combustion engine with indirect injection
  • Method of stopping and restarting internal combustion engine with indirect injection
  • Method of stopping and restarting internal combustion engine with indirect injection

Examples

Experimental program
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Effect test

Embodiment Construction

[0028] [27] figure 1 A heat engine 1 is shown schematically, for example an in-line four-cylinder engine.

[0029] [28] Engine 1 has four cylinders (hereinafter marked as C 1 、C 2 、C 3 、C 4 ), a piston is moved in each cylinder, said piston is connected via a connecting rod to a crankshaft 2, said crankshaft 2 being connected at one end thereof to a flywheel 3.

[0030] [29] A piston that performs reciprocating motion, a connecting rod, a crankshaft 2 , and a flywheel 3 that performs rotational motion constitute a set of moving parts of the engine 1 .

[0031] [30] The engine 1 includes a starter 4 which may be an electric motor or a reversible alternator. The starter 4 has a control part 4', which can switch on or off the power supply of the starter 4 from the vehicle battery.

[0032] [31] Engine 1 is an indirect injection engine, where fuel is injected indirectly into the inlet ducts of each cylinder of the engine. The injectors are controlled by an electronic contro...

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Abstract

The invention relates to a method of stopping and restarting an internal combustion engine with indirect injection. In order to stop the engine in a pre-determined position that facilitates the restart of the engine, the rotation speed and the angular position of the turning part (2, 3) of the engine (1) are measured continuously and the fuel injection is cut off for pre-determined speed and angular position values in relation to the turning part (2, 3). In order to restart the engine using a starter (4), fuel is injected into at least one cylinder of the engine when the piston moving in saidcylinder is in a determined position. The spark ignition and / or fuel injection is suspended for pre-determined speed and angular position values in relation to the turning part (2, 3) of the engine (1) and fuel is injected into at least one cylinder of the engine (1) during the last rotation of the engine before it stops. In order to restart the engine, ignition is carried out in at least one cylinder the piston of which is in the compression position when the engine is stopped (1).

Description

technical field [0001] [01] The present invention relates to a method of stopping and restarting an indirect injection internal combustion engine. Background technique [0002] An internal combustion engine comprises at least one piston reciprocating in a cylinder, usually a plurality of pistons, each movably mounted in a cylinder, each connected to a crankshaft by a connecting rod, which drives the crankshaft Rotate around an axis. [0003] [02] After the moving parts of the engine, especially the piston and the crankshaft, are stopped, the restart conditions of the heat engine largely depend on the stop position of the moving parts. The power required to restart the engine can vary, for example, between a minimum value and a maximum value, the maximum value being 30% greater than the minimum value. Furthermore, the time required for the engine to restart (eg in terms of crankshaft revolutions) is also highly dependent on the engine stop conditions, both in the case of sp...

Claims

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Application Information

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IPC IPC(8): F02D41/06F02D17/04F02N17/00F02D41/34F02P3/04F02D17/00F02D41/04F02D43/00F02D45/00F02N11/08F02N19/00F02N99/00F02P5/15
CPCF02N2019/008F02D41/042F02N2200/021F02N19/005F02N11/0814F02D2041/0095F02D41/062Y02T10/48F02N99/006F02N2200/022Y02T10/40F02D41/06
Inventor 埃里克·孔德米纳樊尚·巴索
Owner PEZHO SITROEN AUTOMOBILS SA
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