WO2019153495A1 - V型多缸柴油机的柴油供给系统 - Google Patents

V型多缸柴油机的柴油供给系统 Download PDF

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WO2019153495A1
WO2019153495A1 PCT/CN2018/083191 CN2018083191W WO2019153495A1 WO 2019153495 A1 WO2019153495 A1 WO 2019153495A1 CN 2018083191 W CN2018083191 W CN 2018083191W WO 2019153495 A1 WO2019153495 A1 WO 2019153495A1
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diesel
pipe
oil pipe
cylinder
distributor
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PCT/CN2018/083191
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English (en)
French (fr)
Inventor
黄第云
沈捷
黄永仲
谢夏琳
于韬
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广西玉柴机器股份有限公司
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Publication of WO2019153495A1 publication Critical patent/WO2019153495A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/48—Assembling; Disassembling; Replacing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement

Definitions

  • the present invention relates to the field of engine fuel supply, and more particularly to a diesel fuel supply system for a V-type multi-cylinder diesel engine.
  • High-power high-speed diesel engines are generally used in generator stations, petrochemicals, high-speed light ships and ships. Basically, it is a four-stroke machine. Since the high-power high-speed diesel engine requires very high single-machine power, its strong load requirement is higher than that of the general diesel engine. For foreign advanced high-speed diesel engines, the average effective pressure is up to 3 MPa, and the highest explosion pressure is the highest. Up to 20MPa. Because high-power high-speed diesel engines require high power and high torque, they have high requirements for several important critical systems, such as cylinder assembly systems, power systems, diesel systems, cooling systems, and lubrication systems.
  • the present invention provides a diesel fuel supply system for a V-type multi-cylinder diesel engine including a V-shaped cylinder block and a plurality of single cylinder heads mounted at cylinder ports of the V-shaped cylinder block.
  • the V-shaped cylinder block is arranged with two rows of cylinder bores arranged in a V shape, and the V-shaped cylinder block outside the two cylinder bores is respectively cast with a sleeve corresponding to the number of cylinder bores
  • the diesel supply system comprises: a diesel tank;
  • An electric control unit pump the number of electric control unit pumps corresponds to the number of cylinders, and a plurality of electric control unit pumps are respectively installed in the sleeve, and a plurality of electric control unit pumps are respectively used for controlling injection of each cylinder
  • Diesel oil supply pipeline the oil supply pipeline includes a left oil pipe and a right oil pipe, and the left oil pipe and the right oil pipe are respectively disposed on both sides of the V-shaped cylinder block near the cylinder head position;
  • the invention has the following beneficial effects: by setting the left oil pipe and the right oil pipe, the fuel oil and the oil returning process are concentratedly distributed through the diesel distributor, which is in line with the high power, high torque and high torque of the high power high speed diesel engine.
  • the layout requirement requires one cylinder and one electric control unit pump. The pressure at the pump end is large, the control is simple, and the injector with large injection pressure is matched, the atomization is good, the combustion is sufficient, and the fuel consumption is low.
  • FIG. 1 is a schematic structural view of a V-shaped cylinder block of a V-type multi-cylinder diesel engine according to the present invention
  • FIG. 2 is a schematic structural view of a single cylinder head disposed on a V-shaped cylinder block of a V-type multi-cylinder diesel engine according to the present invention
  • FIG 3 is a schematic view of a pipeline of a diesel fuel supply system of a V-type multi-cylinder diesel engine according to the present invention.
  • the present invention proposes a diesel fuel supply system for a V-type multi-cylinder diesel engine.
  • the electric control unit pump technology is adopted, the injection pressure is large, and the fuel injection amount can be accurately and dynamically adjusted to ensure that the diesel engine is well atomized under different load conditions, the combustion is sufficient, the transient speed regulation is good, the loading ability is strong, and the fuel consumption is low.
  • the minimum fuel consumption rate is 195g/kW ⁇ h. It adopts one cylinder and one electric control unit pump.
  • the pressure at the pump end is large, the control is simple, and the injector with large injection pressure is equipped.
  • the atomization is good, the combustion is sufficient, the fuel consumption is low, and each unit pump has a correction code to ensure consistency. Sex.
  • the design of one cover per cylinder has a high cylinder head strength.
  • a diesel-fuel supply system of the present embodiment is described in detail by taking a 12-cylinder V-shaped diesel engine as an example:
  • a V-type multi-cylinder diesel engine includes a V-shaped cylinder block 100 and a single cylinder head 200, wherein the V-shaped cylinder block 100 is disposed on the V-shaped cylinder block 100.
  • the sleeve 101 and the unitary cylinder head 200 are respectively mounted on the cylinder mouth portion of the V-shaped cylinder block 100.
  • the diesel fuel supply system includes an electric control unit pump, a diesel tank and a fuel supply pipeline.
  • the electric control unit pumps are respectively used to control the injection of diesel oil into each cylinder, and the diesel tank and the oil supply pipeline are connected to each other for oil supply.
  • the pipeline includes a left oil pipe 43 and a right oil pipe 42, and the right oil pipe 42 and the left oil pipe 43 are respectively connected through a vertical high pressure oil pipe 46 and an electric control unit pump, and the diesel fuel supply system further includes a diesel distributor 49, diesel oil.
  • the distributor 49 is fixed at the front end of the V-shaped cylinder block 100, and the diesel fuel in the diesel tank is connected to the right oil pipe 42 and the left oil pipe 43 via the diesel distributor 49, respectively, and the diesel fuel is connected to the right oil pipe 42 and the left oil pipe 43 respectively.
  • the filter, the left and right diesel filters are respectively mounted on both sides of the V-shaped cylinder block 100.
  • the oil pump pumps the diesel fuel into the diesel distributor 49 through the oil delivery pipe 41, and the diesel fuel in the diesel distributor 49 is respectively connected to the right oil pipe 42 and the left oil pipe 43 respectively, see FIG.
  • the disconnected joint in the pipeline of the right oil pipe 42 and the left oil pipe 43 is connected to the corresponding diesel filter.
  • the right oil pipe 42 and the left oil pipe 43 are respectively connected to the corresponding electric control unit pump through the erected high pressure oil pipe 46 and the high pressure connection pipe 47, and the oil return of the electric control unit pump passes through the left return oil pipe 45 and the right return oil pipe respectively. 44 is returned to the relief valve and the relief valve is integrated into the diesel distributor 49. Further, the high pressure oil pipe 46 and the high pressure connection pipe 47 of the present embodiment are fixed to the positions of the cylinder heads on both sides of the V-shaped cylinder block 100 by the brackets 48.
  • the diesel fuel supply system of the V-type multi-cylinder diesel engine of the present embodiment is configured to distribute fuel and oil return through the diesel distributor by setting the left and right oil pipes, which is in line with the high power and high torque of the high-power high-speed diesel engine.
  • the compact layout of the whole machine requires one cylinder and one electric control unit pump. The pressure at the pump end is large, the control is simple, and the injector with large injection pressure is used. The atomization is good, the combustion is sufficient, and the fuel consumption is low.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

一种V型多缸柴油机的柴油供给系统，包括：柴油箱；多个电控单体泵；供油管路，供油管路包括左侧油管（43）和右侧油管（42），左侧油管（43）和右侧油管（42）分别布设在V形气缸体的两侧靠近缸盖位置；柴油分配器（49）固定在V形气缸体的前端，柴油箱通过输油管与柴油分配器（49）连接，柴油分配器和左侧油管（43）、右侧油管（42）连通，左侧油管（43）和右侧油管（42）中分别接入柴油滤清器，左侧油管（43）和右侧油管（42）分别通过竖向的高压油管和高压接管与多个电控单体泵对应连接，多个电控单体泵的回油分别通过左侧回油管和右侧回油管回流到溢流阀内，溢流阀集成在柴油分配器内。该柴油供给系统可以满足大功率高速柴油机的柴油供给要求。

Description

V型多缸柴油机的柴油供给系统
本申请要求广西玉柴机器股份有限公司于2018年02月07日向中国专利局提交的、申请号为201810123050.7、发明名称为“V型多缸柴油机的柴油供给系统”的中国专利申请的优先权，该申请的全部内容通过引用结合在本发明中。
技术领域
本发明涉及发动机燃油供给领域，特别涉及一种V型多缸柴油机的柴油供给系统。
背景技术
大功率高速柴油机一般应用于发电机站、石油化工、高速轻型船舶和舰艇等。基本为四冲程机，由于大功率高速柴油机要求有非常高的单机功率，因此，其强载度要求较一般柴油机高，对于国外先进的高速柴油机，其平均有效压力最高达3MPa，最高爆压最高达20MPa。由于大功率高速柴油机要求具有高功率、大扭矩的特点，其对几项重要关键系统的要求比较高，比如缸体总成系统、动力系统、柴油系统、冷却系统、润滑系统等。
公开于该背景技术部分的信息仅仅旨在增加对本发明的总体背景的理解，而不应当被视为承认或以任何形式暗示该信息构成已为本领域一般技术人员所公知的现有技术。
发明内容
本发明的目的在于提供一种V型多缸柴油机的柴油供给系统，可以满足大功率高速柴油机的柴油供给要求。
为实现上述目的，本发明提供了一种V型多缸柴油机的柴油供给系统，该V型多缸柴油机包括V形气缸体和安装在V形气缸体的缸口部位的多个单体气缸盖，V形气缸体上布置有呈V形排列的两列气缸孔，两列气缸孔外侧的V形气缸体上分别铸造有与缸孔数目对应的套筒，柴油供给系统包括：柴油箱；多个电控单体泵，电控单体泵的个数与气缸数对应，多个电控单体泵分别对应安装在套筒内，多个电控单体泵分别用来给每缸控制喷射柴油；供油管路，供油管路包括左侧油管和右侧油管，左侧油管和右侧油管分别布设在V形气缸体的两侧靠近缸盖位置；柴油分配器，柴油分配器固定在V形气缸体的前端，柴油箱通过输油管与柴油分配器连接，柴油分配器和左侧油管和右侧油管连通，左侧油管和右侧油管中分别接入柴油滤清器，左右两侧的柴油滤清器分别安装在V形气缸体的两侧， 左侧油管和右侧油管分别通过竖向的高压油管和高压接管与多个电控单体泵对应连接，多个电控单体泵的回油分别通过左侧回油管和右侧回油管回流到溢流阀内，溢流阀集成在柴油分配器内。
与现有技术相比，本发明具有如下有益效果：通过设置左侧油管和右侧油管，通过柴油分配器集中分配燃油和回油处理，符合大功率高速柴油机高功率、大扭矩、整机紧凑的布置要求，采用一缸一个电控单体泵，泵端压力大，控制简单，配上喷射压力大的喷油器，雾化好，燃烧充分，油耗低。
附图说明
图1是根据本发明的V型多缸柴油机的V形气缸体的结构示意图；
图2是根据本发明的V型多缸柴油机V形气缸体上布置单体气缸盖的结构示意图；
图3是根据本发明的V型多缸柴油机的柴油供给系统的管路示意图。
具体实施方式
下面结合附图，对本发明的具体实施方式进行详细描述，但应当理解本发明的保护范围并不受具体实施方式的限制。
除非另有其它明确表示，否则在整个说明书和权利要求书中，术语“包括”或其变换如“包含”或“包括有”等等将被理解为包括所陈述的元件或组成部分，而并未排除其它元件或其它组成部分。
根据本发明具体实施方式的一种V型多缸柴油机的柴油供给系统，为了满足大功率高速柴油机高功率、大扭矩的柴油供给要求，本方案提出一种V型多缸柴油机的柴油供给系统，采用电控单体泵技术，喷射压力大，能精确动态调整喷油量，保证柴油机在不同负荷的情况下，雾化好，燃烧充分，瞬态调速性好，加载能力强，油耗低，最低燃油消耗率达到195g/kW·h。采用一缸一个电控单体泵，泵端压力大，控制简单，配上喷射压力大的喷油器，雾化好，燃烧充分，油耗低，每个单体泵均带修正码，确保一致性。每缸一盖的设计，缸盖强度高。
本实施例以一种12缸V形柴油机为例，对本实施例的柴油供给系统进行详细说明：
具体地，如图1至图2所示，根据本发明具体实施方式的一种V型多缸柴油机，包括V形气缸体100、单体气缸盖200，其中该V形气缸体100上布置有呈V形排列的两列气缸孔，该V形气缸体100的两列气缸孔之间的夹角为60度，两列气缸孔外侧的V形气缸 体100上分别铸造有与缸孔数目对应的套筒101，单体气缸盖200分别对应安装在V形气缸体100的缸口部位。
如图3所示，柴油供给系统包括电控单体泵、柴油箱和供油管路，电控单体泵分别用来控制给每缸喷射柴油，柴油箱和供油管路连通，供油管路包括左侧油管43和右侧油管42，右侧油管42和左侧油管43分别通过竖向的高压油管46和电控单体泵对应连接，柴油供给系统还包括柴油分配器49，柴油分配器49固定在V形气缸体100的前端，柴油箱内的柴油经过柴油分配器49分别与右侧油管42和左侧油管43连通，右侧油管42和左侧油管43中分别接入柴油滤清器，左右两侧的柴油滤清器分别安装在V形气缸体100的两侧。另外，此柴油供给管路中，输油泵通过输油管41将柴油泵入柴油分配器49，柴油分配器49内的柴油分两支分别与右侧油管42和左侧油管43接通，参见图3，右侧油管42和左侧油管43的管路中断开的接头接入对应的柴油滤清器。右侧油管42和左侧油管43分别通过竖立的高压油管46和高压接管47与对应的电控单体泵连接，电控单体泵的回油分别通过左侧回油管45和右侧回油管44回流到溢流阀内，溢流阀集成在柴油分配器49内。另外，本实施例的高压油管46和高压接管47通过支架48固定在V形气缸体100的两侧靠近缸盖的位置。
综上，本实施例的V型多缸柴油机的柴油供给系统，通过设置左侧油管和右侧油管，通过柴油分配器集中分配燃油和回油处理，符合大功率高速柴油机高功率、大扭矩、整机紧凑的布置要求，采用一缸一个电控单体泵，泵端压力大，控制简单，配上喷射压力大的喷油器，雾化好，燃烧充分，油耗低。
前述对本发明的具体示例性实施方案的描述是为了说明和例证的目的。这些描述并非想将本发明限定为所公开的精确形式，并且很显然，根据上述教导，可以进行很多改变和变化。对示例性实施例进行选择和描述的目的在于解释本发明的特定原理及其实际应用，从而使得本领域的技术人员能够实现并利用本发明的各种不同的示例性实施方案以及各种不同的选择和改变。本发明的范围意在由权利要求书及其等同形式所限定。

Claims (1)

  1. 一种V型多缸柴油机的柴油供给系统，该V型多缸柴油机包括V形气缸体和安装在所述V形气缸体的缸口部位的多个单体气缸盖，所述V形气缸体上布置有呈V形排列的两列气缸孔，所述两列气缸孔外侧的V形气缸体上分别铸造有与缸孔数目对应的套筒，其特征在于，所述柴油供给系统包括：
    柴油箱；
    多个电控单体泵，所述电控单体泵的个数与气缸数对应，所述多个电控单体泵分别对应安装在所述套筒内，所述多个电控单体泵分别用来给每缸控制喷射柴油；
    供油管路，所述供油管路包括左侧油管和右侧油管，所述左侧油管和所述右侧油管分别布设在所述V形气缸体的两侧靠近缸盖位置；
    柴油分配器，所述柴油分配器固定在所述V形气缸体的前端，所述柴油箱通过输油管与所述柴油分配器连接，所述柴油分配器和所述左侧油管和所述右侧油管连通，所述左侧油管和所述右侧油管中分别接入柴油滤清器，左右两侧的柴油滤清器分别安装在所述V形气缸体的两侧，所述左侧油管和所述右侧油管分别通过竖向的高压油管和高压接管与所述多个电控单体泵对应连接，所述多个电控单体泵的回油分别通过左侧回油管和右侧回油管回流到溢流阀内，所述溢流阀集成在所述柴油分配器内。
PCT/CN2018/083191 2018-02-07 2018-04-16 V型多缸柴油机的柴油供给系统 WO2019153495A1 (zh)

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CN112648120A (zh) * 2020-12-23 2021-04-13 南岳电控（衡阳）工业技术股份有限公司 一种装叶片式输油泵的单缸共轨供油泵
CN112761841A (zh) * 2020-12-23 2021-05-07 南岳电控（衡阳）工业技术股份有限公司 一种防止柴油机启动困难的喷油泵

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