Replacement Hybrid battery

[wharfhouse]

8 hours ago, andrew-amazing said:

Oke thanks for you feedback!

 

why in winter the engine consumes more?

 

normally the efficiency should be better due to lower temperatures

And as well as above the cabin is warmed by the engine running - so in winter the engine has to run more when you are st speeds where in summer it could be off just to generate heat so you have warm air into the cabin. When you first start the car in cold weather the engine has to run a longer initial cycle to get to working temperature and of course heat up the cabin first thing from stone cold (so fuel economy takes a proportionally bigger hit again during short trips in winter). To a lesser extent you also use more electrics in winter - so lights, wipers, heated seats, rear window demister etc. - these all require power that has to be replaced and so again the engine will run more to replenish the Battery. The optimum external temperature for efficiency is around 20C - at this temperature the cabin is comfortable at ambient temperature so no heat required from the engine to warm the cabin, less power sapping electrics, and the air con isn't working very hard. The hybrid Battery is also at the best working temperature for efficiency too. Conversely as outside temperatures rise up from 20C the air con has to work harder and as that is electrically driven in a hybrid is starts using more energy that then has to be replaced. Also the hybrid traction Battery can become less efficient as it starts to get hotter. The effect is less on fuel economy in hot weather than cold weather but it's noticeable.