Diesel engine fuel injector mounting structure

Abstract

The invention relates to an installation structure for a diesel injector, in particular belongs to the technical field of a power plant. An oil atomizer is arranged in a sealed valve control cabin consisting of a cylinder head, a seal ring and a cylinder cover hood, and is fixed on the cylinder head. The invention is characterized in that: the cylinder head is provided with a high pressure pipe hole; a high pressure pipe joint is connected with the oil atomizer fixed on the cylinder head through the high pressure pipe hole; a sealing element is arranged between the high pressure pipe joint and the high pressure pipe hole. The structure of the invention is simple, compact and rational; the cost of manufacture is reduced; the invention is overhauled conveniently; just the cylinder cover hood is needed to be removed without needing to remove the fuel injection pipe components when the internal components of the cylinder cover hood are maintained; when the invention runs at a low speed, the cylinder cover hood is not required to be covered, and whether the fuel injection pipe joint leaks oil can be observed directly.

Description

technical field [0001] The invention relates to an installation structure of a fuel injector for a diesel engine, and in particular belongs to the technical field of power devices. Background technique [0002] In the existing four-valve diesel engine technology, the high-pressure oil circuit is usually formed by the high-pressure oil pipe supplying fuel oil to the injector through the seal on the cylinder head cover and connected to the injector, so when disassembling or repairing the cylinder head cover For internal parts, the high-pressure fuel pipe must be removed before the cylinder head cover can be removed. This will not only increase the workload of the workers, but also may damage the high-pressure fuel pipe and cause fuel leakage accidents. Another method is to use the high-pressure oil pipe to connect the fuel injector fixed on the cylinder head through the transitional high-pressure oil chamber installed on the cylinder head, so as to increase the number of parts...

AI Technical Summary

Problems solved by technology

[0002] In the existing four-valve diesel engine technology, the high-pressure oil circuit is usually formed by the high-pressure oil pipe supplying fuel oil to the injector through the seal on the cylinder head cover and connected to the injector, so when disassembling or repairing the cylinder head cover The high-pressure fuel pipe must be removed first before the cylinder head cover can be removed for internal parts. This will not only increase the workload of the workers, but may also damage the high-pressure fuel pipe and cause fuel leakage accidents.

Another method is to use the high-pressure oil pipe to connect the fuel injector fixed on the cylinder head through the transitional high-pressure oil chamber installed on the cylinder head, so as to increase the number of parts and the number of high-pressure sealing surfaces, and increase the Increased manufacturing costs and increased risk of high-pressure fuel leakage

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