Dr Jiulin Teng
Welcome! I am Dr Jiulin Teng. Over the years, I have developed insights into a number of issues of popular interest. A photography enthusiast, I have also captured photos of places and people that tell stories. This website is dedicated to my thoughts and my photos.
Previously, I have discussed the design of the long block of the 3L naturally-aspirated V12 that I would build. Today, let us delve into the intake and exhaust systems.
Previously, I have explained the reasoning behind the design of the bottom-end of the 3L naturally-aspirated V12 that I would build. Today, let us move on to the cylinder head.
Today, let us move on to the rotating assembly of the 3L naturally-aspirated V12 engine that I would build if I had a car company.
Previously, I laid out the specifications of the PC301, 3L naturally-aspirated V12 engine that I would build if I had a car company. Today, let us delve into the details of the engine block.
As promised previously, today I lay out the specifications of the 3.0L NA V12 engine that I would build if I had a car company for the working enthusiasts.
What I would do if I had a car company today? This article talks about my motivations, the types of cars that I want to build, and what value this exercise brings to my readers.
The Ford-GM 10-speed is an evolution of the ZF 8HP that doubles down on the original’s gear train design and philosophy. Today, let us analyze its advantages and trade-offs and delve into how its gear train works.
The Toyota–Aisin 10-speed automatic transmission combines lessons from the Aisin 8-speed and ZF 8HP into one of the more compelling, elegant designs. Today, let us analyze its advantages and trade-offs and delve into how its gear train works.
Mercedes 725.0 9G-Tronic, aka NAG3, is one of the most advanced automatic transmissions for passenger vehicles today. Let us analyze the advantages and trade-offs of the 9G-Tronic and delve into how its gear train works.
These photos were taken in December 2025 in various parks in Zhongshan.
The ZF 8HP represents both a major evolution in the philosophy of the 6HP and a considerable revolution in gear train design. Today, let us analyze its advantages and trade-offs and delve into how its gear train works.
The ZF 6HP can be considered the world’s first modern automatic transmission, influencing all future models with a series of conscious trade-offs. Today, I analyze the advantages and trade-offs of the ZF 6HP and delve into how its gear train works.
The Mercedes 722.9 7G-Tronic was the world’s first 7-speed automatic transmission for passenger cars. Today, let us analyze the advantages and trade-offs of its design and delve into how its gear train works.