Fuel oil composite injection mechanism for automobile petrol engine as well as mode thereof

An injection mechanism, gasoline engine technology, applied in fuel injection control, machine/engine, mechanical equipment, etc., can solve the problems of atomization and port injection ratio deterioration, HC emission deterioration, etc., to improve gasoline combustion, reduce emissions, The effect of reducing fuel consumption

Active Publication Date: 2008-08-27
ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD +1
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When an in-cylinder direct-injection gasoline engine is started, the pressure increase in the fuel rail lags behind, so the injector inj

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fuel oil composite injection mechanism for automobile petrol engine as well as mode thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0014] Embodiment 1: The fuel compound injection mechanism of a gasoline engine for a vehicle and its method of this embodiment. As shown in Figure 1, the fuel compound injection mechanism of a gasoline engine for a vehicle includes a combustion chamber 1, an intake port 2, an intake manifold 3, and a high pressure injection. The fuel injector 4, the low pressure fuel injector 5, the high pressure fuel injector 4 is installed below each intake port 2, the low pressure fuel injector 5 is installed on the branch pipe of each cylinder of the intake manifold 3, the low pressure fuel injector 5, The high-pressure fuel injector 4 is controlled by an electronic control unit to complete various working conditions, such as injection, non-injection, and the amount of injection.

[0015] The compound injection method of the fuel compound injection mechanism of a gasoline engine for vehicles includes the following steps:

[0016] (1). In the starting condition, the high-pressure injector 4 do...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a vehicle gasoline engine fuel compound injection mechanism and a way thereof. The compound injection mechanism comprises a combustion chamber, an inlet channel and an inlet manifold, wherein, the lower part of the inlet channel is provided with a high pressure fuel oil injector, manifold branch of each cylinder of the inlet manifold is provided with a low pressure fuel oil injector, both the high pressure fuel oil injector and the low pressure fuel oil injector are controlled by an ECU. The compound injection way comprises the following steps that: 1. when the working condition is started, the high pressure fuel oil injector does not work, the low pressure fuel oil injector performs the injection inside the inlet manifold; 2. when an accelerant warms up, both the high pressure fuel oil injector and the low pressure fuel oil injector work; 3. under the circumstance of partial load, the low pressure fuel oil injector injects a small amount of fuel oil to form thin and even gas mixture which enters a combustion chamber; under the circumstance of the compression travel, the high pressure fuel oil injector injects and thick gas mixture is formed near a spark plug to realize the lay separation of the gas mixture inside the cylinder; 4. under the circumstance of high speed full load, the high pressure fuel oil injector works and the low pressure fuel oil injector does not work. The vehicle gasoline engine fuel compound injection mechanism and the way thereof realize the compound injection of the combination of the intra-cylinder injection and the extra-cylinder injection, improve the gasoline burning situation and decrease the exhaust of the unburned hydrocarbon.

Description

technical field [0001] The invention belongs to the field of automobile manufacturing, and in particular relates to a fuel compound injection mechanism for a gasoline engine for a vehicle and its method. Background technique [0002] Compared with traditional port injection engines, current in-cylinder direct injection engines can reduce fuel consumption at partial loads and improve torque and power at high loads. The technical economy of direct injection in cylinder is mainly to stratify the mixture in cylinder and realize lean combustion. However, this technology has extremely strict requirements on the design of the engine cylinder head air passage and combustion chamber, and also requires complex and precise engine control strategies. It is manifested in the fact that the fuel injector does not inject fuel until the compression stroke at partial load, and a rich mixture is easily formed near the spark plug. In the area, unburned hydrocarbons (HC) will be emitted and to...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): F02D41/30
Inventor 赵铁良陈杰李书福杨健赵福全
Owner ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products