The German has prohibited the export of MTU396 to China because of their use for military purposes as Germany is bound by a European Union arms embargo imposed on China.Did the German block the sale of MTU396 to China? or for China to sell the submarine with it ?
Sorry for this late intrusion, but is there any plans for future Chinese subs (like the 039C or 041) to use the CHD620 engines as well? Or just the Thai S26T sub?Hechai manufactures both original Deutz-MWM TBD620 and their own CHD620 engines. My guess is the ToT agreement gives Hechai IP rights over any improved variants they develop from TBD620 if certain performance parameters are met. Very common practice.
Since the engine offered to Thailand is referred to as "CHD620" not "TBD620" that means it's one of Hechai's improved variants. At least it should have high pressure common rail injection. Maybe sequential turbo-charging as well, not sure. Hechai's webpage on CHD620/622 is completely blank, so no specs sheet. Technologically it's certainly more advanced than MTU396, which is an ancient design by now (MTU is promoting MTU 4000 for new submarines).
We know from official press release that the newest variant of the series, the 4MW class CHD622V20BCR, will be used on next generation Chinese unmanned underwater vehicles. But we have no information on whether any engine of the series has been used on manned submarines. But I see the move toward CHD620/622 series as inevitable. MTU396 is really getting dated now and there's no chance China will get the licenses for U83, the submarine variant in MTU 4000 series.