Diesel fuel injector with integrated corona ignition device, fuel injector system and control method

Abstract

The invention relates to a diesel injector of an integrated corona igniting device. The diesel injector is applicable to a gasoline premixing and diesel compression ignition double-fuel engine. The diesel injector comprises a diesel injector body which is provided with an oil inlet connected with a high pressure oil rail; a central electrode is arranged on the peripheral surface of the bottom of the diesel injector main body in an insulating manner; at least one igniting top end is arranged at one end, locating in an injecting hole of the diesel injector body, of the central electrode; a coil electrically connected with the central electrode is coiled on the peripheral surface, above the central electrode, of the diesel injector body in the insulating manner; the coil is electrically connected and output through a spark plug plug-in wiring harness above the diesel injector body. The diesel has the advantages that the inner space of a combustion chamber of a cylinder cover can be reasonably utilized without influencing the arrangement of an air valve of an engine and an air inlet / outlet channel; the ignition is easy, and the ignition efficiency is high; the diesel injector is applicable to the operation mode of the gasoline premixing and diesel compression ignition double-fuel engine.

Description

technical field [0001] The invention relates to an engine system fuel injector, in particular to a diesel fuel injector with an integrated corona ignition device, which is applied to a dual-fuel engine with gasoline premixing and diesel compression ignition. The invention also relates to an integrated corona ignition device. The diesel fuel injector system of ignition device, and the control method of the diesel fuel injector system of integrated corona ignition device of gasoline premixed, diesel compression ignition dual-fuel engine. Background technique [0002] In order to adapt to the continuous improvement of automobile fuel consumption and emission requirements in the domestic and foreign automobile markets, various automobile manufacturers have carried out research and development in the field of dual-fuel engine technology, in order to combine the advantages of low gasoline emission and high fuel economy of diesel to design a high-efficiency engine. Low-emission eng...

AI Technical Summary

Problems solved by technology

This kind of combustion method combines the dual characteristics of good emission of gasoline engine and low fuel consumption of diesel engine, but its operation method will cause the problem of low compression ratio in the cylinder. Start the engine in the mode of igniting the gasoline mixture, and adopt the way of diesel compression ignition gasoline premixing after the temperature rises

However, in the current engine structure, a separate arrangement of diesel fuel injectors and independent spark plugs is still used. This arrangement is likely to affect the size of the valve arrangement due to insufficient space in the cylinder head combustion chamber, which in turn will affect the intake and exhaust of the engine. performance, and the existing spark plugs are basically in the form of electrode arc ignition, which requires high energy for ignition, low ignition efficiency, and high replacement and maintenance costs in the later period. It is not suitable for dual-fuel engines with gasoline premixed diesel compression ignition

Images