Hi Christophe, hello everyone,
First, I read
The Solex is not as ecological as it is believed because it is necessary to pedal in the coasts of the blow one breathlessly and one releases more CO2 then as one made an additional effort it is necessary to feed more and the food industry that pollutes the environment a lot. In addition, the engine is a ridiculously efficient 2-stroke engine that rejects carcinogenic hydrocarbons
And we have to admit that everything is right in this sentence ... Now, a Solex is better than a Hummer from the point of view of CO2 rejection, but if the CO2 / power output is lower.
Also, I suggest that everyone stops breathing and no longer moves or eats ...
Let's debate, let's debate
...
Christophe wrote:A) it takes 30 hp to reach 100 km / h for an average car
B) carburize = accelerate I think according to you? So a 30 hp engine would not have enough torque to accelerate "well" for you? This can be compensated for by an electric motor having precisely, unlike heat engines, its maximum torque at low speed. The downsizing + hybrid combination is therefore the solution for the city in my opinion.
For A, it's true, but it doesn't go fast enough for my taste on the highway, and to tow a load, or even 4 passengers a little big, it's too weak.
For B, it is also necessary to take into account criteria of comfort and driving safety: 80 hp, it is necessary to put a gas boost and overtake a truck that travels at 90 km / h without it lasting 6 km. .. especially if you are on a national !!
An 80 hp engine can very well be used at 40 hp by easing off, which is in line with your point of view from A.
For Bbis, on the electric motor, I agree with you. As the electric motor no longer sends much torque at high speed (> 100 km / h) ... it's not good to overcome the wind drag on the car. On the other hand, it is nickel for the city!
Almost no agreement: downsizing means motor with higher average load (therefore higher average efficiency) so for the same power demand, it is necessary to decrease the max power. of the motor to increase its average load.
The problem is that the term "downsizing" has become a bag of potatoes where we put all the engine variants, even when they are no longer downsizing in the strict sense.
... Basically, downsizing means reducing the size of the engine, then the additional conditions' at equal power "were added, and recently" at higher power ".
The latest Volkswagen TSI engines are a good example, because they even achieve significant up-power from downsizing.
This requires, as you say, to increase its average load, and often to provide it with efficient injection systems, and often with supercharging. The yield is generally better.
@+