Система подачи топлива FAW J6P: Деконструкция 50 Критически важные детали для прецизионного впрыска

Welcome to this expert deconstruction of the Система подачи топлива FAW J6P (Глава 23). Это полный “High-Pressure Common Rail” (HPCR) сборка для FAW Jiefang CA3250P66K2L1T1E 6×4 самосвал.

This is not a simple fuel line; it is a complex “Логическая сборка” из 50 типы компонентов, engineered for one purpose: to create and control immense pressure.

The “логика” of this Система подачи топлива FAW J6P is to draw fuel, filter it, pressurize it to over 25,000 пси, and inject it as a microscopic, atomized mist directly into the cylinders at the precise microsecond it is needed.

The “Common Rail Logic” is what defines this Система подачи топлива FAW J6P. Unlike old systems, the ‘Fuel injection pump’ (Комп 1) does not *time* the injection; it only “generates pressure.” This immense pressure is stored in the “common rail” (the high-pressure pipes, Комп 35-42). Этот “логика” allows the ‘Injectors’ (Комп 18) to be electronically controlled, independent of the pump. Этот “Multi-Shot Injection Logic” (firing multiple, tiny injections per power stroke) is what gives the engine its quiet operation, its low-end torque, its fuel efficiency, and its low emissions.

This expert guide is an essential resource for engine technicians, fuel system specialists, и менеджеры по запчастям. We will deconstruct the entire 50-component group into its four primary “логика” система: а “Low-Pressure & Filtration Logic” (the priming pump and filter), а “High-Pressure Generation Logic” (the main injection pump), а “High-Pressure Distribution Logic” (the common rail pipes), и критический “Injection & Return Logic” (the injectors and return lines). This is the complete guide to the Система подачи топлива FAW J6P.

Основной 1: The “Low-Pressure & Фильтрация” Логика (Комп 28, 49)

This group’s “логика” is to pull fuel from the tank, “prime” the system, and provide “Absolute Filtration” before the fuel ever reaches the expensive high-pressure pump.

1. Компонент: ‘Rotary-style hand-priming pump assy’ (1117010-29Д)
Этот (Комп 49) это “Serviceability Logic.” The Система подачи топлива FAW J6P является “self-bleeding” during normal operation, but after a filter change, the lines are full of air. Этот “hand-priming” pump’s “логика” is to allow a technician to manually *pull* fuel from the tank, *push* it through the ‘Fuel filter’ (Комп 28), and *bleed* all the air out of the system. Starting the engine with air in the lines can damage the high-pressure pump.

2. Компонент: ‘Fuel filter assy’ (1012010-36Д)
Этот (Комп 28) это “System Protection Logic.” Это “gatekeeper” на весь Система подачи топлива FAW J6P. High-Pressure Common Rail (HPCR) components have tolerances measured in *microns*. A single grain of sand or a drop of water will *instantly* destroy the ‘Fuel injection pump’ (Комп 1) or the ‘Injectors’ (Комп 18). Этот “Absolute Filtration Logic” means this filter must remove 99.9% of all water (via an integrated separator) and all particulate matter down to 2-5 микроны. A cheap, low-quality filter is the number one cause of Система подачи топлива FAW J6P отказ.

Основной 2: The “High-Pressure Generation” Логика (The HPCR Pump)

Эта группа представляет “мышца” принадлежащий Система подачи топлива FAW J6P. Its sole function is to generate over 25,000 PSI of fuel pressure.

1. Компонент: ‘Fuel injection pump assy’ (1111010C31E)
Этот (Комп 1) это “Pressure Logic.” This is a high-precision, “positive displacement” pump (likely a 3-piston radial pump). It takes the “low-pressure” (60-90 пси) fuel from the filter (Комп 28) and compresses it to an immense 25,000+ пси. Его “self-lubrication” logic is that it uses the diesel fuel itself as its *only* lubricant. This is another reason why the ‘Fuel filter’ (Комп 28) is so critical.

2. Компонент: ‘Fuel injector drive gear’ (1111216-59Д)
Этот (Комп 7) это “Drive Logic.” This high-pressure pump is not electric. Это “gear-driven” directly from the engine’s internal “Timing Gear Train.” Этот “Gear-Drive Logic” является а “life-of-the-engine” solution, as it is 100% reliable and perfectly timed with the engine’s rotation.

3. Компоненты: ‘Support-fuel injection pump’ (1111101-31Э) & «Кронштейн’ (1111102-29Д)
Эти скобки (Комп 31 & 34) являются “Alignment Logic.” The ‘Drive gear’ (Комп 7) must mesh *perfectly* with the engine’s timing gear. These heavy-duty, cast brackets bolt to the engine block and provide a rigid, precision-machined mounting flange that guarantees this perfect alignment.

4. Компоненты: ‘Lube oil pipe assy’ (1104060-29Д) & ‘Hollow bolt’ (1104066-367)
Этот (Комп 10 & 11) это “Pump Lubrication Logic.” While the *pumping* side of the HPCR pump is fuel-lubricated, его “водить машину” сторона (with its own bearings and camshaft) is lubricated by *engine oil*. This pipe’s “логика” is to “tap” clean oil from the engine block and feed it directly to the pump’s bearings, ensuring its long-term durability. This is a critical link for the Система подачи топлива FAW J6P.

Основной 3: The “High-Pressure Distribution” Логика (The Common Rail)

This group forms the “Общий рельс” сам. Его “логика” is to act as a “pressure reservoir” или “accumulator,” storing the 25,000+ PSI from the pump and distributing it to all six injectors.

1. Компоненты: ‘High-pressure fuel pipe assy’ (Цил 1-6) (1129010… к …1129060-31Э)
Эти (Комп 35-40) are the six individual “injector lines.” These are the most critical pipes in the Система подачи топлива FAW J6P. Их “логика” является “Identical Length.” They are *all* precisely bent to be the exact same length. This is crucial. If one pipe were shorter, а “pressure waves” from the injector firing would be different, causing Cyl 1 to get a different pressure “pulse” than Cyl 6. By making them identical, а “pressure-wave logic” is balanced, ensuring every cylinder gets the *exact* same fuel, for a smooth, balanced engine.

2. Компоненты: ‘High-pressure fuel pipe clip/base/gasket’ (1129100-29Д, и т. д.)
This group (Комп 41-48) это “ШВХ & Safety Logic.” The six high-pressure pipes (Комп 35-40) “throb” violently with every injection event. If allowed to touch each other or the engine, they would “раздражать,” vibrate, and develop a “fatigue crack.” A high-pressure fuel leak at 25,000 PSI is not a “drip”—it is an *atomized*, highly-flammable mist that will instantly cause a massive engine fire. The “логика” of these clips and brackets is to hold every pipe perfectly rigid and isolated, preventing this critical failure in the Система подачи топлива FAW J6P.

Основной 4: The “Injection & Return” Логика (The Injector)

This final group’s “логика” is to perform the “final event”: injecting the high-pressure fuel into the cylinder.

1. Компонент: ‘Injector’ (1112010-31Э)
Этот (Комп 18) это “Atomization Logic.” It is a high-speed, electronically-controlled (solenoid or piezo) needle valve. When the ECU commands, it opens for a few *microseconds*. The 25,000+ PSI pressure forces the fuel through microscopic holes in its nozzle, “atomizing” it into a vapor-like mist that ignites instantly for maximum power.

2. The “Уплотнение” Логика: ‘Injector gasket’ (1112306-29Д) & ‘O-ring’ (1112014-29Д)
The injector (Комп 18) must be sealed from two things. The ‘Gasket’ (Комп 17) is a copper “crush washer” at the bottom. Его “логика” is to seal the 2000+ PSI of *combustion pressure* out. The ‘O-ring’ (Комп 19) is a rubber seal at the top. Его “логика” is to seal the low-pressure “fuel return” *in*, preventing fuel from leaking onto the hot engine.

3. The “Зажим” Логика: ‘Injector presser plate’ (1112013-29Д) & ‘Bolt’ (1112011-29Д)
Этот “Логика зажима” is what holds the injector in its bore. The ‘Bolt’ (Комп 21) pulls up on the ‘Presser plate’ (Комп 20), which pivots and creates a high “вниз” force on the injector. This force is what “crushes” the ‘Gasket’ (Комп 17) to create the combustion-proof seal.

4. The “Return” Логика: ‘Fuel injector return pipe assy’ (1104050-29Д)
Этот (Комп 13) это “Bypass Cooling Logic.” The HPCR pump and injectors “bypass” a large amount of fuel to cool and lubricate their own moving parts. This ‘Return pipe’ “логика” is to collect all this “used” fuel from the injectors and the pump and route it safely back to the fuel tank. This is a vital part of the Система подачи топлива FAW J6P‘s thermal management.

FAW J6P Fuel Supply System Parts List & Технические характеристики

В следующей таблице представлена ​​полная, подробная разбивка всех 50 типы компонентов в Система подачи топлива FAW J6P для FAW Jiefang CA3250P66K2L1T1E 6×4 самосвал.

Основные характеристики

Технические характеристики Система подачи топлива FAW J6P are defined by its function as a high-pressure common rail (HPCR) система впрыска.