First, welcome to the forum! Anyway, check out another thread here under the SMA area........"Does SAIC own SMA?" In this thread, your question is answered in detail and will give you more info about SMA. In short, you ARE right - Geely IS the parent owner of SMA.
Ash is right....The Hisoon for example has a Toyota 8A-FE based 1.3 litre
four cylinder. After a suit brought by Toyota in 2003, Geely somehow won the rights to build it in house as the MR479Q. Geely had previously bought this engine (also found in the Geely CK) from Tianjin Industrial (home of Xiali) which is licensed by Toyota.
Geely is juggling more than a few projects. It even has one in Hong Kong and so it's hard to say where Maple is going. As you may know Li Shutong's Maple Auto started with the production of Meilu in a venture with Jiangbei Machinerey up north and then moved down to Shanghai in 2003. Some said that the idea of making Citroen-based models was to cut production costs by sourcing from the already established Dongfeng-Citroen suppliers. Now it will be interesting to see what exclusive IPR comes from Maple's collaboration with Tongji University and the Shanghai Innova design house.
btw the in-house engine maker I mentioned above is called the Shanghai Maple Engine Co.,Ltd. It makes both the MR and JL series engines.