200927560 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種機車喷射引擎之油路裝置，特別β 關於一種以負壓幫浦提升燃油管内燃油位能之車喳= 引擎之油路裝置。 噴射 【先前技術·】 如圖一所示，一般機車之噴射系統，係由油箱1〇〇 〇 連接進油管120，供輸燃油至引擎16〇之低壓噴嘴15〇 , 其中油箱内設有燃油幫浦（圖未示出），且於該管路内設 有壓力調節閥130調整燃油壓力，供輸燃油至低壓噴嘴 150，然後引擎160再藉由回油管17〇輸送回油至油箱 100，惟其中該燃油幫浦必須使用電力始能作動，且容易 產生高熱，又高壓燃油必須使用高壓油管包覆，一旦高 壓油管破裂，則内部的高壓燃油會產生外洩，極易造成 ◎ 火燒車的意外。油帛100㈣之燃油幫浦的滤網亦容易 阻塞，進而造成零件使用壽命不長。再者若是採用一般 低壓喷射系統，以利用位能差方式使燃油進入低壓喷嘴 之模式’則在低壓喷嘴運作時必須有排放氣泡之管路設 β十’因此必須加以設置三通閥及氣泡分離器與多條油 官，因此必須使用較多元件及較多的管路配合，因而形 成管路、零件配置的複雜化。 【發明内容】 200927560 '裝置本提供一種機車嘴射引擎之油路 敬i ^ 貝麼繁从升燃油位能之機車嗔 射引擎之油路裝置。 叫干貝 、為達到上述目的之機車料引擎之油路裝置， 以變更燃油管路配置的方式，將、、_ H ^ 八將油相之燃油藉由燃油輸 送管經喊清料幻|擎上之低壓㈣，將低壓喷嘴出 油口设為整個油路裝置最高點，利用高位差引導燃油經 ❹回油管自然回流至負壓幫浦再流回油箱，負壓幫浦係裝 置於低壓噴嘴與油箱間的回油管上，利用負壓幫浦作動 時’燃油管所產生的負壓來提升燃油管内之燃油位能， 本油路裝置將低壓喷嘴出；由口設定為整給由路裝置之最 高點，利用高位差原理引導燃油自然流至負壓幫浦及油 箱内，此時對負壓幫浦而言皆是助力，而該燃油管路内 因呈負壓狀態，所以不需使用高壓油管，僅需配置一般 油管即可，若燃油管因外力或其他原因造成破裂時，不 ❹ 會發生燃油外洩的情形，可減少火燒車的意外發生；另 外將回油管口徑縮小，避免管路流速差而使低壓喷嘴吸 入氣泡，可達到減少排氣管路的設置並簡化油路設計。 為能更進一步暸解本發明之步驟，茲舉一較佳可行之 實施例並配合圖式詳細說明如下。 【實施方式】 如圖二所示，一種機車喷射引擎之油路裝置，其包 括油箱10、濾清器30、負壓幫浦20、低壓喷嘴40、燃 200927560 油輸送管12、回油管11 ;油箱1 〇内之燃油可藉由燃油 輸送管12輸送至濾清器30，再經燃油輸送管12送至引 擎50上之低壓喷嘴40’濾清器30係裝置於油箱10與低 壓喷嘴4 0間的燃油輸送管12上，本創作將低壓喷嘴4 〇 出油口 41設為整個油路裝置最高點，低壓喷嘴4〇出油 口 41連設有回油官11接至油箱1〇，而在低壓喷嘴與 油箱10間之回油管11上裝置有一負壓幫浦2〇。 ❹200927560 IX. INSTRUCTIONS OF THE INVENTION: TECHNICAL FIELD The present invention relates to an oil circuit device for a locomotive injection engine, in particular, a rut for an engine that uses a negative pressure pump to raise fuel level in a fuel pipe. . Injection [Prior Art·] As shown in Figure 1, the general locomotive injection system is connected to the oil pipe 120 by the fuel tank 1〇〇〇, and supplies fuel to the low-pressure nozzle 15〇 of the engine 16〇, in which the fuel tank is provided with fuel Pu (not shown), and a pressure regulating valve 130 is arranged in the pipeline to adjust the fuel pressure for delivering fuel to the low pressure nozzle 150, and then the engine 160 is returned to the tank 100 by the return line 17 ,, The fuel pump must use electric power to start the operation, and it is easy to generate high heat. The high-pressure fuel must be covered with high-pressure oil pipe. Once the high-pressure oil pipe is broken, the internal high-pressure fuel will leak out, which is very likely to cause ◎ accident of burning the car. . The filter screen of the fuel pump of the oil bowl 100 (4) is also easy to block, which results in a short service life of the parts. In addition, if a general low-pressure injection system is used, the mode of using the potential energy difference to make the fuel enter the low-pressure nozzle is 'there must be a pipe for discharging bubbles when the low-pressure nozzle is operated. Therefore, the three-way valve and bubble separation must be set. The device and the plurality of oil officials, therefore, must use more components and more pipelines to cooperate, thus forming a complicated circuit and component configuration. [Summary of the Invention] 200927560 'The device provides a locomotive nozzle engine oil circuit. ^ ^ 么 繁 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 。 。 。 。 。 It is called the scallop, the oil circuit device of the locomotive engine for the above purpose, in order to change the fuel line configuration, the _H^8 oil phase fuel is shouted by the fuel delivery pipe. The low pressure (4), the low pressure nozzle outlet port is set as the highest point of the entire oil circuit device, and the high position difference is used to guide the fuel back to the negative pressure pump through the helium return pipe and then flow back to the oil tank, and the negative pressure pump is installed at the low pressure nozzle. On the oil return pipe between the fuel tanks, the negative pressure generated by the fuel pipe is used to increase the fuel level energy in the fuel pipe when the negative pressure pump is actuated, and the oil passage device will discharge the low pressure nozzle; the port is set as the whole device. At the highest point, the high-level difference principle is used to guide the fuel to flow naturally into the negative pressure pump and the fuel tank. At this time, the negative pressure pump is all helpful, and the fuel line is in a negative pressure state, so there is no need to use the high pressure oil pipe. Only need to configure the general oil pipe. If the fuel pipe is broken due to external force or other reasons, there will be no leakage of fuel, which can reduce the accident of the fire car. In addition, the diameter of the return pipe will be reduced to avoid The low flow rate of the line allows the low pressure nozzle to absorb air bubbles, which reduces the setting of the exhaust line and simplifies the oil circuit design. To further understand the steps of the present invention, a preferred embodiment is described in detail below with reference to the drawings. [Embodiment] As shown in FIG. 2, an oil circuit device of a locomotive injection engine includes a fuel tank 10, a filter 30, a negative pressure pump 20, a low pressure nozzle 40, a fuel 200927560 oil delivery pipe 12, and a return oil pipe 11; The fuel in the tank 1 can be sent to the filter 30 through the fuel delivery pipe 12, and then sent to the low pressure nozzle 40 on the engine 50 via the fuel delivery pipe 12. The filter 30 is installed in the fuel tank 10 and the low pressure nozzle 40. In the fuel delivery pipe 12 between the two, the low pressure nozzle 4 outlet port 41 is set as the highest point of the entire oil circuit device, and the low pressure nozzle 4 is connected to the oil outlet 41 to be connected to the fuel tank 1〇. A negative pressure pump 2 is disposed on the oil return pipe 11 between the low pressure nozzle and the oil tank 10. ❹
請續參閱圖三所示，當引擎50啟動，油箱内之 燃油經燃油輸送管12輸送至渡清器3 〇，再經燃油輸送管 12送至引擎50上之低壓喷嘴40,該低壓喷嘴4〇出油口 41係設為整個油路裝置最高點，利用高位差引導燃油經 回油管11自然回流至負壓幫浦2〇再流回油箱1〇，此時 因負壓幫浦20作動，該燃油輸送管12内之燃油係為提 升位能的狀態，而利用該低壓喷嘴4〇出油口 41高位差 弓ί導燃油經回油管11自♦然回流至負I幫浦2G，因而對負 壓幫浦20而言皆是助力；另外再對回油f U 口徑作縮 小設計，使燃油經由燃油輸送管12流入低壓喷嘴4〇時， 不至因管路流速差而產生氣泡，而形成引擎作動不良， 更可以減少排氣管路的設置，達成簡化該油路設計之功 效’又因負壓幫浦20於油管内所呈現之負壓效果，因此 =裝置高壓油管，僅以—般油管設置即可若油管破 、占I i因負壓作用，該油管只會吸人空氣而不會發生燃 油外洩之情形，可減少火燒車的意外發生。 以上所述為本發明之較佳實施例之詳細說明與圖式 7 200927560 本發明之所有範圍應以下述之專 ，並非用來限制本發明， 利範園為準。 【圖式簡單說明】 圖一為習知機車喷射引擎 圖一為本發明機車射弓丨擎 圖二為本發明機車嘴射弓丨 之油路襞置示意圖； =油路裝置立體示意圖；及 擎之油路裝置示意圖。Referring to FIG. 3, when the engine 50 is started, the fuel in the fuel tank is sent to the distributor 3 through the fuel delivery pipe 12, and then sent to the low pressure nozzle 40 on the engine 50 via the fuel delivery pipe 12, the low pressure nozzle 4 The oil outlet 41 is set as the highest point of the entire oil circuit device, and the fuel is naturally returned to the negative pressure pump 2 through the oil return pipe 11 by the high position difference, and then flows back to the oil tank 1 〇, at this time, the negative pressure pump 20 is activated. The fuel in the fuel delivery pipe 12 is in a state of raising the potential energy, and the low pressure nozzle 4 is used to pump out the oil port 41. The high fuel is discharged from the oil return pipe 11 to the negative I pump 2G. The negative pressure pump 20 is all helpful; in addition, the oil return f U diameter is reduced, so that when the fuel flows into the low pressure nozzle 4 via the fuel delivery pipe 12, bubbles are not generated due to the difference in the flow velocity of the pipe. If the engine is not working well, it can reduce the setting of the exhaust pipe and achieve the effect of simplifying the design of the oil circuit. The negative pressure effect of the negative pressure pump 20 in the oil pipe, therefore, the high pressure fuel pipe is only used. If the oil pipe is set, if the oil pipe is broken, I I will be under negative pressure. For use, the oil pipe will only suck the air without causing the leakage of the fuel, which can reduce the accident of the fire car. The above description of the preferred embodiments of the present invention and the accompanying drawings are intended to be limited to the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a conventional locomotive injection engine. FIG. 1 is a schematic view of the locomotive of the locomotive of the present invention. FIG. 2 is a schematic diagram of the oil passage of the locomotive of the locomotive; Schematic diagram of the oil circuit device.
【主要元件符號說明】 10、10 0油箱 11、170回油管 12燃油輸送管 20負壓幫浦 30濾清器 40、150低麗嘴嘴 41出油口 50、160引擎 120進油管 130壓力調整閥[Main component symbol description] 10, 10 0 fuel tank 11, 170 return pipe 12 fuel delivery pipe 20 negative pressure pump 30 filter 40, 150 low mouth mouth 41 oil outlet 50, 160 engine 120 inlet pipe 130 pressure adjustment valve