4. The cylinder liner of a two-stroke diesel engine is arranged with an air port, which is opened and closed by a piston to realize gas distribution. During engine operation, the cylinder liner may encounter several problems: Cylinder Liner Supplier For MITSUBISHI,Cylinder Liner Set,Cylinder Liner For MITSUBISHI,Cylinder Liner For MITSUBISHI Engine Parts,original Cylinder Liner For MITSUBISHI 1D auto parts , https://www.1dauto.com
First, they can crack or leak due to overheating or excessive pressure, leading to compression loss and reduced engine performance.
Second, over time, the cylinder liner may wear or scratch, leading to poor seal of the Piston Ring, resulting in a slow increase in fuel consumption.
Finally, incorrect cylinder liner installation can result in misaligned pistons, causing serious engine damage.
Regular inspection and maintenance of the cylinder liner is essential to ensure optimal engine performance and longevity.
On January 2nd, international crude oil prices surged past the $100 per barrel mark, hitting a new all-time high. This milestone carries significant symbolic weight, signaling a shift in global energy dynamics. The upward trend in oil prices is expected to directly impact consumers and lead to broader inflation across various goods and services. In this context, concentrated nitric acid—a key chemical raw material—has become a focal point for market observers. Following its historical low in 2008, what trajectory will it take now? According to reports, several factors are driving up domestic concentrated nitric acid prices.
One of the primary reasons is the rising cost of raw materials. Chinese nitric acid producers largely rely on coal as their main input, and with coal prices surging, production costs have skyrocketed. Particularly after entering the fourth quarter of last year, coal prices saw a sharp increase, multiplying the financial pressure on nitric acid manufacturers.
The synthetic ammonia market has also experienced dramatic fluctuations since November. A supply-demand imbalance led to a steep price rise. By mid-December, despite falling urea and methanol prices, synthetic ammonia prices continued to climb, increasing by 100 yuan per ton over five days. This further squeezed the margins of nitric acid producers. Platinum rhodium, another major cost factor, has also seen a significant price hike, with current prices averaging 30 yuan higher than at the start of the year and over 100 yuan higher than in 2006.
Meanwhile, downstream products such as o-nitrochlorobenzene, MDI, TDI, vanillin, and adipic acid have witnessed soaring prices. For example, o-nitrochlorobenzene rose by 2,600 yuan between September and December, while MDI prices increased by 35% from the beginning of last year. With tight supply and growing demand, these trends are reinforcing the upward movement in nitric acid prices.
Logistics costs have also risen sharply. Increased fuel and rail freight prices, combined with seasonal transportation restrictions, have raised the cost of moving both raw materials and finished products. Additionally, stricter enforcement of weight regulations in northern provinces has further disrupted supply chains.
Production volumes have dropped due to low inventory and resource constraints. In November, national concentrated nitric acid output fell by 2.7% compared to the previous year, with some regions seeing declines as high as 16%. Experts warn that if this trend continues, shortages could occur before the Spring Festival.
Despite rising input costs, nitric acid prices have remained stagnant, creating a strange market situation. Profit margins for producers have been nearly wiped out, with some even facing losses. Many plants were forced to cut production or shut down in December, raising concerns about future supply stability.
With weak market conditions and limited room for price increases, the concentrated nitric acid industry faces an uncertain outlook. Companies are struggling to maintain operations, and without immediate relief, downstream industries may soon face raw material shortages.
The Cylinder Liner is a cylindrical part that is placed in the cylinder block hole of the body and is secured by the cylinder head. The piston reciprocates in its inner hole and is cooled by cooling water outside.
The functions of the cylinder liner are:
1. Together with the cylinder head and piston, it forms the cylinder working space.
2. The cylinder liner of the cylinder piston diesel engine is the lead of the reciprocating movement of the piston, which is subjected to the side thrust of the piston.
3. The heat of the piston assembly and itself is transferred to the cooling water to make the working temperature appropriate.
October 10, 2025