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Exhaust and scavenging system of a two-stroke diesel engine

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

Active Publication Date: 2021-12-07
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 a two-stroke diesel engine
  • Exhaust and scavenging system of a two-stroke diesel engine
  • Exhaust and scavenging system of a two-stroke diesel engine

Examples

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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 for a two-stroke diesel engine, including an exhaust device and a scavenging device, wherein: the side of the exhaust device facing the scavenging device is optionally provided with an exhaust gas rear Processing unit; the scavenging device has two connection states: when the exhaust device is provided with an exhaust gas after-treatment unit, the side of the scavenging device facing the exhaust device is provided with a second connection unit, and the second connection unit is configured to connect the exhaust gas Post-processing unit; when the exhaust device is not provided with an exhaust gas post-processing unit, the side of the scavenging device facing the exhaust device is provided with a first connection unit, and the first connection unit is configured to connect to the exhaust device. Beneficial effects of the present invention: an exhaust gas post-processing unit can be optionally provided between the exhaust device and the scavenging device, and different connection units are provided according to whether the exhaust gas post-processing unit is provided, and different connection units will not affect the operation of the main engine Overall dimensions, so as to adapt to different transformation needs.

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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Patent Type & Authority Patents(China)
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