Кулачковый механизм FAW J6P: 10 Важнейшие детали для точного газораспределения двигателя

Welcome to this definitive technical analysis of the Кулачковый механизм FAW J6P. Это полный “engine timing” и “breathing” система для FAW Jiefang CA3250P66K2L1T1E 6×4 diesel dump truck.

This is not just a single part, но “Логическая сборка” из 10 components working in perfect harmony.

The “логика” принадлежащий Кулачковый механизм FAW J6P is to act as the “mechanical brain” of the engine. It is a gear-driven, overhead-valve (OHV) система, meaning the camshaft is located inside the engine block—a hallmark of extreme durability. Its sole function is to precisely control *when* the intake and exhaust valves open and close, which dictates the engine’s entire performance, власть, и эффективность.

The “Lobe Logic” of this Кулачковый механизм FAW J6P is its most critical feature. The camshaft (Комп 6) is a forged steel shaft with a series of precision-ground “lobes” или “cams.” The exact shape, height (lift), and angle (duration) of these lobes are not simple; they are complex mathematical profiles. Этот “lobe profile” is the engine’s horsepower and torque curve. It dictates exactly how far the valves open and how long they stay open, which in turn controls the “volumetric efficiency” (how much air the engine can breathe) at every RPM. A worn Кулачковый механизм FAW J6P will lead to a direct, critical loss of power.

This expert guide is an essential resource for engine rebuilders, machine shop technicians, and fleet parts managers. We will deconstruct the entire 10-component group into its three primary “логика” система: а “Lobe & Логика привода” (the camshaft itself), а “Несущий & Support Logic” (а 7 critical bushes), и “Axial & Логика крепления” (the thrust plate assembly that holds the Кулачковый механизм FAW J6P на месте).

Основной 1: The “Lobe & Водить машину” Логика (Компонент 6)

Это “мозг” принадлежащий Кулачковый механизм FAW J6P. All other components in this group exist solely to support this one part.

1. Компонент: ‘Camshaft’ (1006016-29Д)
Этот компонент (Комп 6) является ядром сборки. Его “Материальная логика” is extreme durability. It is forged from a single billet of high-strength steel or made from “chilled cast iron.” The “lobes” (the egg-shaped cams) are induction-hardened to create a glass-like, wear-resistant surface that can withstand the constant, high-pressure friction of the valve lifters.

Его “Логика привода” is also critical. In this heavy-duty Кулачковый механизм FAW J6P, the camshaft is “gear-driven.” It meshes directly with a corresponding gear on the crankshaft (the ‘Crankshaft timing gear’, P/N 1005037-29D). Этот “gear-on-gear” logic is far superior to a timing belt or chain; это “non-slip,” zero-maintenance design that is intended to last the entire life of the engine. This gear-driven design is essential for the reliability of the Кулачковый механизм FAW J6P. The camshaft itself also has an integrated gear that, по очереди, drives the engine’s oil pump, making it responsible for both timing *and* lubrication.

Основной 2: The “Несущий & Поддерживать” Логика (Компоненты 4, 5, 7)

This group’s “логика” is to allow the Кулачковый механизм FAW J6P to rotate at thousands of RPM inside the stationary engine block with almost zero friction.

Компоненты: ‘Front/Intermediate/Rear camshaft bush’ (1006024A29D, 1006028A29D, 1006029A29D)
These components (Комп 4, 5, 7) являются “Hydrodynamic Logic” принадлежащий Кулачковый механизм FAW J6P. They are commonly known as “cam bearings.” The parts list calls for a total of seven bushes: one ‘Front’ (Комп 4), five ‘Intermediate’ (Комп 5), and one ‘Rear’ (Комп 7).

Их “Sacrificial Logic” имеет важное значение. The camshaft does not spin directly on the iron of the engine block. Вместо, это “floats” on a microscopic film of high-pressure oil. These bushes are the precision-made, soft-metal (bronze alloy) sleeves that are “press-fit” into the block to support this oil film. They are the “wear item.” If oil becomes contaminated with dirt or metal, the debris will embed in the soft bush, saving the far more expensive, закаленный Кулачковый механизм FAW J6P (the camshaft) and the engine block from being destroyed. Replacing these seven bushes is a mandatory, precision-critical step in any professional engine rebuild.

Основной 3: The “Axial & Застежка” Логика (All Others)

This final group’s “логика” is to lock the Кулачковый механизм FAW J6P на месте, preventing it from moving “front-to-back” in the engine.

1. The “Thrust Control” Логика (Компоненты 2, 3, 8)
Это “Axial Control Logic.” Because the Кулачковый механизм FAW J6P имеет зубчатый привод, а “helical” cut of the gear teeth creates a constant “thrust” force that tries to push the camshaft *forward* or *backward* in the engine.

• ‘Camshaft thrust plate’ (1006018-29Д): Этот (Комп 8) это “stop.” It is a hardened steel plate that bolts to the front of the engine block. A machined face on the camshaft rides against this plate, preventing any axial movement.
• ‘Camshaft cover assy – thrust bush’ (1006030-29Д): Этот (Комп 3) is the cover that holds the thrust plate in place, completing the “sandwich.”
• ‘Thrust plate’ (1006033-29Д): Этот (Комп 2) is likely a shim or secondary plate that works with the main thrust plate (Комп 8) to achieve a perfect, “zero-play” end-float.

2. The “Застежка & Alignment” Логика (Компоненты 1, 9, 10)
This is the hardware that guarantees the precision of the Кулачковый механизм FAW J6P.

• ‘Dowel pin’ (Q5210612): Этот (Комп 9) это “Alignment Logic.” It is a solid steel pin that is pressed into the block *before* the thrust plate is installed. Its logic is to ensure the thrust plate (Комп 8) is perfectly aligned, ensuring the camshaft is perfectly centered.
• ‘Болт с шестигранной головкой’ (Q1840512, Q1840820): Эти болты (Комп 1 & 10) являются “Clamping Force Logic.” They are used to securely fasten the entire thrust plate and cover assembly to the front of the engine block, locking the Кулачковый механизм FAW J6P in its precise location. The “flange logic” (built-in washer) prevents the bolts from vibrating loose.

FAW J6P Cam Mechanism Parts List & Технические характеристики

В следующей таблице представлена ​​полная, подробная разбивка всех 10 component types identified in this Кулачковый механизм FAW J6P сборка для FAW Jiefang CA3250P66K2L1T1E 6×4 самосвал.

Основные характеристики

Технические характеристики Кулачковый механизм FAW J6P определяются по своей функции как “mechanical brain” of the engine’s valvetrain.