EV equivalent of fuel cut off inertia switch?
Discussion
I've not posted in the EV forum as I thought the issue may be of interest to a wider audience.
I thought about Emailing a few manufacturers and asking them directly but thought that would entail a lot of work and I should be getting on doing other things.
Do EVs have sensors that detect they've hit an obstruction like a wall, tree or another vehicle and cut the power to the motors?
I am thinking of the EV equivalent of a fuel cut off inertia switch.
When Clarkson tested the Nissan GT-R R35 on Top Gear the Sat Nav 'knew' he was on a circuit and could turn off or disable some of the electronic nannies.
Could drive cut off inertia switches in EVs be linked to the Sat Nav, or recognise from speed and steering inputs that the EV is likely to be in a car park and increase the sensitivity of the inertia sensors and/or reduce the amount pf power available to the EV motors as the car is likely to be parking and therefore needs less torque.
I am basically asking about technical solutions to help reduce parking mishaps that may happen when parking EVs and EVs being involved in low speed manoeuvres by people that may have been driving ICE cars with clutches for decades.
I thought about Emailing a few manufacturers and asking them directly but thought that would entail a lot of work and I should be getting on doing other things.
Do EVs have sensors that detect they've hit an obstruction like a wall, tree or another vehicle and cut the power to the motors?
I am thinking of the EV equivalent of a fuel cut off inertia switch.
When Clarkson tested the Nissan GT-R R35 on Top Gear the Sat Nav 'knew' he was on a circuit and could turn off or disable some of the electronic nannies.
Could drive cut off inertia switches in EVs be linked to the Sat Nav, or recognise from speed and steering inputs that the EV is likely to be in a car park and increase the sensitivity of the inertia sensors and/or reduce the amount pf power available to the EV motors as the car is likely to be parking and therefore needs less torque.
I am basically asking about technical solutions to help reduce parking mishaps that may happen when parking EVs and EVs being involved in low speed manoeuvres by people that may have been driving ICE cars with clutches for decades.
Edited by carinaman on Tuesday 7th March 14:48
carinaman said:
I am thinking of the EV equivalent of a fuel cut off inertia switch.
I am basically asking about technical solutions to help reduce parking mishaps that may happen when parking EVs and EVs being involved in low speed manoeuvres
Does a fuel cut off inertia switch normally help to reduce parking mishaps?I am basically asking about technical solutions to help reduce parking mishaps that may happen when parking EVs and EVs being involved in low speed manoeuvres
carinaman said:
I've not posted in the EV forum as I thought the issue may be of interest to a wider audience.
I thought about Emailing a few manufacturers and asking them directly but thought that would entail a lot of work and I should be getting on doing other things.
Do EVs have sensors that detect they've hit an obstruction like a wall, tree or another vehicle and cut the power to the motors?
I am thinking of the EV equivalent of a fuel cut off inertia switch.
When Clarkson tested the Nissan GT-R R35 on Top Gear the Sat Nav 'knew' he was on a circuit and could turn off or disable some of the electronic nannies.
Could drive cut off inertia switches in EVs be linked to the Sat Nav, or recognise from speed and steering inputs that the EV is likely to be in a car park and increase the sensitivity of the inertia sensors and/or reduce the amount pf power available to the EV motors as the car is likely to be parking and therefore needs less torque.
I am basically asking about technical solutions to help reduce parking mishaps that may happen when parking EVs and EVs being involved in low speed manoeuvres by people that may have been driving ICE cars with clutches for decades.
There is one hell of a clunk on my Tesla as it connects/disconnects the high voltage system so the car is capable of it but you are asking 2 things really. I thought about Emailing a few manufacturers and asking them directly but thought that would entail a lot of work and I should be getting on doing other things.
Do EVs have sensors that detect they've hit an obstruction like a wall, tree or another vehicle and cut the power to the motors?
I am thinking of the EV equivalent of a fuel cut off inertia switch.
When Clarkson tested the Nissan GT-R R35 on Top Gear the Sat Nav 'knew' he was on a circuit and could turn off or disable some of the electronic nannies.
Could drive cut off inertia switches in EVs be linked to the Sat Nav, or recognise from speed and steering inputs that the EV is likely to be in a car park and increase the sensitivity of the inertia sensors and/or reduce the amount pf power available to the EV motors as the car is likely to be parking and therefore needs less torque.
I am basically asking about technical solutions to help reduce parking mishaps that may happen when parking EVs and EVs being involved in low speed manoeuvres by people that may have been driving ICE cars with clutches for decades.
Edited by carinaman on Tuesday 7th March 14:48
1. Does it disconnect when in a crash - likely yes but the battery would still be live somewhere and the risk is the battery setting itself on fire if damaged. A low risk but big issue if it does.
2. Can the cars auto detect and lower torque or make themselves more driveable at slow speeds? This isn't really a problem, you can set Chill mode on Tesla to help with you getting used to the power and response, a lot of people find this helps initially when moving from ICE or if you aren't very good at regulating your right foot. You soon get used to it though and it doesn't do it automatically based on location. You may be over engineering the solution, i would rather have linear response all the time so I can gauge how the car will react based on my inputs.
Sebring440 said:
Does a fuel cut off inertia switch normally help to reduce parking mishaps?
I've heard of a fuel cut off inertia switch being triggered by a hitting a bump in the road.I am more concerned about driver inexperience or incompetence leading to another vehicle being pushed into other vehicles in a parking situation.
I wasn't coming it at from an EV Vs ICE angle more an Operator Error issue when someone that's been driving for years gets it wrong while trying to park an EV that doesn't have a clutch.
It wasn't meant as an EV knocking point, more an EV knocking other vehicles into other vehicles in a parking situation possibly resulting in damage to property and injuries to people.
I was wondering if EVs could have the intelligence to know when the human driving them is in a car park or about to park and put the EV into some kind of limited torque parking mode that may reduce the chances of them pushing a parked vehicle into another parked vehicle. A sort of 'Oh, oh the human is going to park let's put the car into limited torque parking mode'.
Edited by carinaman on Tuesday 7th March 15:28
carinaman said:
I've heard of a fuel cut off inertia switch being triggered by a hitting a bump in the road.
I am more concerned about driver inexperience or incompetence leading to another vehicle being pushed into other vehicles in a parking situation.
I wasn't coming it at from an EV Vs ICE angle more an Operator Error issue when someone that's been driving for years gets it wrong while trying to park an EV that doesn't have a clutch.
It wasn't meant as an EV knocking point, more an EV knocking other vehicles into other vehicles in a parking situation possibly resulting in damage to property and injuries to people.
I was wondering if EVs could have the intelligence to know when the human driving them is in a car park or about to park and put the EV into some kind of limited torque parking mode that may reduce the chances of them pushing a parked vehicle into another parked vehicle. A sort of 'Oh, oh the human is going to park let's put the car into limited torque parking mode'.
@carinaman - You are overthinking a problem that has been solved by multiple manufacturers, even on ICE cars, with pretty standard passive safety tech. It's used on cars regardless of fuel type. I am more concerned about driver inexperience or incompetence leading to another vehicle being pushed into other vehicles in a parking situation.
I wasn't coming it at from an EV Vs ICE angle more an Operator Error issue when someone that's been driving for years gets it wrong while trying to park an EV that doesn't have a clutch.
It wasn't meant as an EV knocking point, more an EV knocking other vehicles into other vehicles in a parking situation possibly resulting in damage to property and injuries to people.
I was wondering if EVs could have the intelligence to know when the human driving them is in a car park or about to park and put the EV into some kind of limited torque parking mode that may reduce the chances of them pushing a parked vehicle into another parked vehicle. A sort of 'Oh, oh the human is going to park let's put the car into limited torque parking mode'.
Edited by carinaman on Tuesday 7th March 15:28
VW have had Automatic Brake Intervention for a while, for applying the brakes in case you are about to hit something when parking. BMWs have had Active Park Distance Control for a while too, including on my BMW EV.
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