Which one and according to which regulations will this be installed and tested for functioning properly / safely? High voltage DC contactors are expensive and bulky so car manufacturers are not going to install these if they don't have to.You really need to look at some teardown video's and talk to people designing such cars ... instead of spouting FUD ...
There IS a HV contactor in the batteyr pack. It will be shot open under certain conditions. It is an explosive charge to guarantee the thing opening and potential arcs/sticky contacts being extinguished and remediated. It has its own redundant backup , even if the local 12 volt system fails and there is a catastrophic short on the high voltage bus and the pack is somehow damaged : the contactors chemical charge WILL still fire fromt he embedded supercap in the contactor.
Just like you have a mechanical clutch in a mechanical engine you have an 'enable' pin to the inverter driving the propulsion motor. set the enable to low ( by clicking the stalk on the steering wheel in neutral ) and the motor goes in coast. This is a hard-wired , not software controlled gating on the power mosfets. Even in case of a cut control wire the system ios designed to fail-safe. ( meaning motor switched to coast ).
I have the impression that you think that these newfangled electric cars are designed by a bunch of muppets ...
And how many time had people mixed up the accelerator pedal with the brake? Or an older driver is backing out of a parking space and mows down a bunch of people after mistaking D for the letter R.
Teslas seem to have a couple of "hack through the cables here" points for firemen to disconnect the power in an emergency, but they don't seem to have taken them very seriously. The labelling isn't good, and there is weak information on the car about what the emergency services need to do with those disconnect points. The Prius has been around a long time, and I think is the most mature family of cars with high voltage high current systems on board. How well do they handle high voltage isolation in an emergency.
Teslas seem to have a couple of "hack through the cables here" points for firemen to disconnect the power in an emergency, but they don't seem to have taken them very seriously. The labelling isn't good, and there is weak information on the car about what the emergency services need to do with those disconnect points. The Prius has been around a long time, and I think is the most mature family of cars with high voltage high current systems on board. How well do they handle high voltage isolation in an emergency.Ever seen the firemen training video and documentation ? afaik Tesla is the only company to have such video and docs...
Loops are clearly labeled with bright orange labels. Pop a piece of plastic , snip-snip and you are safe. The contactors are open.
And how many time had people mixed up the accelerator pedal with the brake? Or an older driver is backing out of a parking space and mows down a bunch of people after mistaking D for the letter R.
...which is why you should always reverse into a parking bay, and move out of it forwards.
Chevy Volt ...
Toyota ...
...which is why you should always reverse into a parking bay, and move out of it forwards.
Sorry, but that is one of my pet hates!
It wastes time, irritates everybody else who is trying to use the carpark, & is likely to cause "young drivers" to do antisocial things.
Us "older drivers" just sit there & grind our teeth!
...which is why you should always reverse into a parking bay, and move out of it forwards.
Sorry, but that is one of my pet hates!
It wastes time, irritates everybody else who is trying to use the carpark, & is likely to cause "young drivers" to do antisocial things.
Us "older drivers" just sit there & grind our teeth!
You have to either back into a parking stall or you have to back out.
Please explain how other drivers backing into a stall is more problematic for you than them backing out...
Chevy Volt ...
Toyota ...no comment. i don't know how those things are built . they may use different or similar. i don't know.
Run away car syndrome applies to both ICEs and EVs
The accident you are describing is a repeat of the one that happened with Toyota. Can’t remember if it was the driver or passenger but one was a California Highway patrol officer. He was on the phone with Highway Patrol dispatch saying the car he was in was out of control. The accelerator was stuck and there was nothing they could do. They could not turn the car off as it was a push button car. They gear shift leaver was locked in drive and could not be disengaged. The brakes could not slow the car down. The Highway patrol officer was telling the dispatcher everting they were tying to do to stop the car as the car just kept in accelerating. I think the car finally got up to around 120 mph when they lost control of the car and the Highway patrol officer and the companion in the car drove off the road and were killed.
This incident lead to the Toyota recall about 10 year ago. Remember Toyota said it was loose the floor mat that caused the accelerator pedal to get stuck. But in reality wasn’t it faulty software?
Please correct any inaccuracies in my story.
...which is why you should always reverse into a parking bay, and move out of it forwards.
Sorry, but that is one of my pet hates!
It wastes time, irritates everybody else who is trying to use the carpark, & is likely to cause "young drivers" to do antisocial things.
Us "older drivers" just sit there & grind our teeth!
You have to either back into a parking stall or you have to back out.
Please explain how other drivers backing into a stall is more problematic for you than them backing out...
Simple, several cars are driving around in a parking area looking for a stall.
Normally, the front one sees a spot, & drives into it, whilst the others drive on to the next spot, where the process is repeated.
Now the other scenario, several cars are driving around in a parking area looking for a stall.
The first driver sees a spot, then drives past, & reverses into it.
The drivers following cannot see the stall, so assume the car will continue.
Suddenly, they are confronted by (almost always) a ginormous SUV or "people mover" reversing at them.
The driver usually stuffs it up on the first attempt, & takes several "goes" at it, before getting into the stall.
Reversing out?
The driver checks before reversing, & doesn't back up when there are cars approaching.(often, if there is one, it will stop & allow the reversing car out, in the hope of taking the stall just vacated.
The main lane around the car park is wider than a car space, so the manoeuvre is easier than backing into a narrow stall.
Chevy Volt ...
Toyota ...no comment. i don't know how those things are built . they may use different or similar. i don't know.And that is where the problem is: are these systems mandatory or not? How about regulations where the driver has to be able to shut the engine down?
...which is why you should always reverse into a parking bay, and move out of it forwards.
Please explain how other drivers backing into a stall is more problematic for you than them backing out...
...which is why you should always reverse into a parking bay, and move out of it forwards.
in ,many places that is illegal ! you need to park nose-in.
two reasons :
- scanning of license plates. Only the REAR license plate is the true plate holding the expiration sticker and / or certificate tag. The front one doesn't. Many places don't require a front one.
- emergency towing. Handbrakes work only on rear wheels. if a car needs to be moved : lift its rear wheels of the ground and roll it out. If a car is parked in reverse this becomes a problem.
Could somebody please elaborate on the matter of backing into a parking space vs. pulling in straight ahead? Eight consecutive posts about this existential question are really only scratching the surface... Any anecdotes, case studies, personal experience please?
Could somebody please elaborate on the matter of backing into a parking space vs. pulling in straight ahead? Eight consecutive posts about this existential question are really only scratching the surface... Any anecdotes, case studies, personal experience please?