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Exhaust and scavenging system of two-stroke diesel engine

A technology of scavenging system and diesel engine, which is applied in the direction of exhaust gas treatment, exhaust device, mechanical equipment, etc. It can solve the problems of large space occupied by the post-processing unit and economic impact, and achieve the effect of increasing the efficiency of exhaust gas removal

Active Publication Date: 2020-01-21
CSSC POWER INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the wide application of exhaust gas post-treatment technology in high-power low-speed two-stroke diesel engines, the demand for integrated design of exhaust gas post-treatment units is becoming more and more urgent, especially for marine high-power low-speed two-stroke diesel engines, the exhaust gas after-treatment unit outside the machine occupies The space is too large, which will have a great impact on the economy of the whole ship

Method used

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  • Exhaust and scavenging system of two-stroke diesel engine
  • Exhaust and scavenging system of two-stroke diesel engine
  • Exhaust and scavenging system of two-stroke diesel engine

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Embodiment 1

[0039] Such as figure 1 As shown, the exhaust and scavenging system of a two-stroke diesel engine provided by the present invention includes an exhaust device 1 and a scavenging device 2, and both the exhaust device 1 and the scavenging device 2 are connected with the main engine of the two-stroke diesel engine.

[0040] It should be noted that the main engine includes a welded base, a frame and a casted cylinder block, and the scavenging method of the main engine is DC scavenging.

[0041] In this embodiment, the exhaust device 1 is located above the scavenging device 2. The exhaust device 1 is used to collect and accommodate the exhaust gas discharged from the exhaust valves of the main engine, and send it to the scavenging device 2 after the pressure fluctuation is stabilized. The length of the device 1 is no more than the length of the upper platform of the main engine, the width is no more than three times the bore of the main engine, and the installation height of the ex...

Embodiment 2

[0047] see Figure 2 ~ Figure 4 Another exhaust and scavenging system for a two-stroke diesel engine provided by the present invention includes an exhaust device 1 and a scavenging device 2, and both the exhaust device 1 and the scavenging device 2 are connected to the main engine of the two-stroke diesel engine.

[0048] It should be noted that the main engine includes a welded base, a frame and a casted cylinder block, and the scavenging method of the main engine is DC scavenging.

[0049] In this embodiment, the exhaust device 1 is located above the scavenging device 2, and the exhaust device 1 is provided with an exhaust gas post-processing unit. The exhaust device 1 is used to collect and process the exhaust gas discharged from each exhaust valve of the main engine to stabilize the pressure. After fluctuating, it is sent to the scavenging device 2. The length of the exhaust device 1 does not exceed the length of the upper platform of the main engine, the width does not ex...

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Abstract

The invention belongs to the technical field of diesel engines, and discloses an exhaust and scavenging system of a two-stroke diesel engine. The exhaust and scavenging system comprises an exhaust device and a scavenging device, wherein a waste gas post-treatment unit is selectively arranged on one side, facing the scavenging device, of the exhaust device; the scavenging device is provided with two connection states: when the exhaust device is provided with the waste gas post-treatment unit, a second connection unit is arranged on one side, facing the exhaust device, of the scavenging device,and the second connection unit is configured to be connected with the waste gas post-treatment unit; and when the exhaust device is not provided with the waste gas post-treatment unit, a first connection unit is arranged on one side, facing the exhaust device, of the scavenging device, and the first connection unit is configured to be connected with the exhaust device. The exhaust and scavenging system has the beneficial effects that the waste gas post-treatment unit is selectively arranged between the exhaust device and the scavenging device, different connection units are arranged accordingto whether the waste gas post-treatment unit is arranged or not, and the different connection units do not affect the overall dimension of a main engine, so that different transformation requirementsare met.

Description

technical field [0001] The invention relates to the technical field of diesel engines, in particular to an exhaust and scavenging system of a two-stroke diesel engine. Background technique [0002] With the wide application of exhaust gas post-treatment technology in high-power low-speed two-stroke diesel engines, the demand for integrated design of exhaust gas post-treatment units is becoming more and more urgent, especially for marine high-power low-speed two-stroke diesel engines, the exhaust gas after-treatment unit outside the machine occupies If the space is too large, it will have a great impact on the economy of the whole ship. There are two problems to be solved in the design of the on-board exhaust gas after-treatment unit. One is to find a reasonable solution for the arrangement of the exhaust gas after-treatment unit in the already stretched space of the main engine; The feature of switching between the exhaust device with exhaust gas after-treatment unit and wi...

Claims

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Application Information

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IPC IPC(8): F01N13/08F01N3/20F01N3/28F02B25/00
CPCF01N3/2066F01N3/2892F01N13/08F01N2610/02F02B25/00F02B2700/037Y02T10/12
Inventor 程俊锋屠丹红向贤念康纳新
Owner CSSC POWER INST CO LTD
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