Are the Heat Engine (HE) and Internal Combustion Engine (ICE) not the same because ICE only exchanges the heat to the surrounding[only one reservoir]? And I have a question what if it's an SI engine which has a spark plug to be a hot reservoir, and surrounding would be a cold reservoir like the following picture.
I showed this picture to my Prof. He said it was wrong, and he will answer it next week, but I just want to know it now. I try to look up in the book or some websites but still can't find the answer.
Since it has 2 reservoirs why it's not the Heat Engine (I know that they are not the same, but according to the reasons above isn't it should be the same?)