How relevant is EV for Singapore in 2020?

[inlinesix]

3 hours ago, Beregond said:

Dun assume this is good for driver loh.

Imagine next time  ws mech is all qualify  IT personal that have high pay. Not those malaysian  worker. Any simple  repair will cost u bomb.

(Touch wood)

Nowadays, WS that service German needs to use laptop.

Only classic car no need 

[Munhua]

Get the nissan kicks or Serena epower. A full EV with engine as battery generator. No need to worry abt range anxiety and long charging times. I believe u will enjoy the instant torque and acceleration. Fuel Mileage quite similar to diesel except it is cleaner. Bluesg cannot make it as acceleration like shit. 

[Roh96]

4 hours ago, Munhua said:

Get the nissan kicks or Serena epower. A full EV with engine as battery generator. No need to worry abt range anxiety and long charging times. I believe u will enjoy the instant torque and acceleration. Fuel Mileage quite similar to diesel except it is cleaner. Bluesg cannot make it as acceleration like shit. 

Very clever way of using a small engine as generator to charge the battery. 

[inlinesix]

6 hours ago, Munhua said:

Get the nissan kicks or Serena epower. A full EV with engine as battery generator. No need to worry abt range anxiety and long charging times. I believe u will enjoy the instant torque and acceleration. Fuel Mileage quite similar to diesel except it is cleaner. Bluesg cannot make it as acceleration like shit. 

The problem with e-power is battery is smaller than hybrid.  The worst thing is can't even charge it using external source.

Unlike ReX EV.

The current option now is PHEV.

[Munhua]

Phev still use engine to drive car. Epower only use electric motor to drive car. World of difference. Almost a full EV. If epower can charge using a socket even better. 

[Roh96]

I saw from SGCM that the road tax for Serena is $1300 but the engine size is only 1200 cc. Why small cc but paying a 2L size roadtax? 

[601F]

2 hours ago, Munhua said:

Phev still use engine to drive car. Epower only use electric motor to drive car. World of difference. Almost a full EV. If epower can charge using a socket even better. 

Actually PHEV can operate as a full EV if the battery is charged and the driver avoids large throttle inputs. Up to 40-70km for each full charge, depending on car. Driven as such, the engine does not operate at all and no petrol is used. 

Yet when you need more power, or run out of battery, the engine kicks in to give more performance or range. To me it's almost the best of both worlds

[601F]

2 hours ago, Roh96 said:

I saw from SGCM that the road tax for Serena is $1300 but the engine size is only 1200 cc. Why small cc but paying a 2L size roadtax? 

Road tax is based on either engine capacity or electric motor power output, whichever is higher. In this case, although engine cap is small, the motor output is high, that's why road tax is relatively high

[ElectricYouth]

6 hours ago, 601F said:

 

Yet when you need more power, or run out of battery, the engine kicks in to give more performance or range. To me it's almost the best of both worlds

A phev will have the powertrain of both a petrol car and a EV. So more complicated....

[theo8]

On 11/18/2020 at 4:28 PM, Roh96 said:

Just curious, does EV need regular servicing like petrol engine? The brake system will be the same so need to change brake fluid, pad and rotor.

How about the engine and gearbox? What maintenance does it require?

The brake system for EV won't exactly be the same as petrol engines. It may be slightly more complicated in terms of architecture due to regenerative breaking. I am not too sure how this extra feature comes into play for maintenance.

EV has the frictional braking feature of the petrol engine but has an additional regenerative braking feature (that petrol cars won't have).

Some EVs have regenerative braking - transfer kinetic energy of moving/slowing down the car to charge the battery.

When the car is slow enough, the conventional frictional break kicks in. 

Would be interesting to find out how this extra break system affects maintenance - moderate maintenance or low?

 

Edited November 19, 2020 by theo8
typo

[Toeknee_33]

I believe the brake regen is not actually on the brake itself, but more on the gear/motor side. Like how it used to be in old bicycles, where a dynamo rubs against the tyre and generate electricity.

My hybrid car's brakes look no different from a full ICE car although it has brake regen.

[theo8]

1 minute ago, Toeknee_33 said:

I believe the brake regen is not actually on the brake itself, but more on the gear/motor side. Like how it used to be in old bicycles, where a dynamo rubs against the tyre and generate electricity.

My hybrid car's brakes look no different from a full ICE car although it has brake regen.

thats cool, maintenance wise, doesnt have much to maintain for regen break?

[601F]

1 hour ago, ElectricYouth said:

A phev will have the powertrain of both a petrol car and a EV. So more complicated....

That's true, but the level of "complicated-ness" will be quite similar to a typical hybrid e.g. Prius 

[601F]

44 minutes ago, theo8 said:

The brake system for EV won't exactly be the same as petrol engines. It may be slightly more complicated in terms of architecture due to regenerative breaking. I am not too sure how this extra feature comes into play for maintenance.

EV has the frictional braking feature of the petrol engine but has an additional regenerative braking feature (that petrol cars won't have).

Some EVs have regenerative braking - transfer kinetic energy of moving/slowing down the car to charge the battery.

When the car is slow enough, the conventional frictional break kicks in. 

Would be interesting to find out how this extra break system affects maintenance - moderate maintenance or low?

 

From my understanding the regenerative braking is simply the electric motor running in reverse, not really any new hardware. I guess the complicated part may be how to get the braking handed over from regen at higher speed to frictional at lower speed.

Found an article in the link below which explains this quite well. Disclaimer: it's quite long and a bit technical. Skip down to the section on Regenerative Braking

TLDR: the handover is controlled by a brake controller (an electronic device), so this bit is additional hardware compared to normal non-hybrid cars

https://www.machinedesign.com/mechanical-motion-systems/article/21831982/whats-the-difference-between-friction-and-regenerative-car-brakes

Edited November 19, 2020 by 601F

[Munhua]

https://global.nissannews.com/en/releases/release-b77bb77f0ccb7e1cd99859daa7095dc6-201119-01-e

[Yewheng]

On 11/18/2020 at 6:18 PM, Lethalstrike said:

Yes, consumers will also be at the mercy of the automakers and workshops. All electronics components are likely to be made proprietary with even more extensive integration with the software of the car. Nowadays, automakers are hiring programmers, not the usual mechanical and electrical & electronic engineers. 😁

Hopefully with the increasing adoption of EVs, there will have a set of common standard protocol to be used like charging point, what type of charger, the charging head and etc. Just like the 3 pin plug we use in Singapore, some countries use 2 pin plug and etc. If there is a set common standard protocol, then it would be easier for manufacturers to design and make EV cars and everyone can use and charge it without headache of different type of charging standard and etc. Like computer, handphone, portable charge and etc, we have USB type c now. It is so universal that many devices use that standard and not have to worry about using different cables for different device. 

Edited November 20, 2020 by Yewheng

[ElectricYouth]

6 hours ago, Yewheng said:

Hopefully with the increasing adoption of EVs, there will have a set of common standard protocol to be used like charging point, what type of charger, the charging head and etc. Just like the 3 pin plug we use in Singapore, some countries use 2 pin plug and etc. 

Singapore’s standard:

https://www.ema.gov.sg/Electric_Vehicle_Charging_Systems.aspx

Chademo was only added this year. Have not seen any public chargers with chademo yet. 
 

 

 

[inlinesix]

WHAT DOES IT TAKE TO MAINTAIN AN ELECTRIC VEHICLE?

https://www.myev.com/research/ev-101/what-does-it-take-to-maintain-an-electric-vehicle

Quote

Monthly (performed by owner):

Check the tire pressure and adjust as necessary. Examine the tires for excess wear. Check the windshield washer fluid and fill as necessary.

Every 7,500 miles:

Have the tires rotated. Check the coolant level for the battery, cabin heater, and the power inverter, accessory power, and charger modules. Visually check for fluid leaks. Inspect the brakes. Visually inspect the steering, suspension, and chassis components for damage. Inspect the power steering, halfshafts and drive shafts for excessive wear, leaks, or damage. Check the restraint (airbags) system. Lubricate body components (door locks). Check the accelerator pedal for damage, high effort, or binding and replace if necessary. Visually inspect the gas struts (suspension) for signs of wear, cracks, or other damage. Check the tire sealant expiration date, if equipped (this is used to temporarily seal and inflate a damaged tire).

Twice a year:

Flush corrosive materials (i.e. road salt) from the underbody using plain water.

Every 15,000 miles:

Replace the windshield wiper blades.

Every 36,000 miles:

Replace the cabin air filter (more frequently if necessary).

Every 75,000 miles:

Replace the hood and/or body lift support gas struts.

Every five years:

Drain and fill the vehicle coolant circuits. Replace the brake fluid (IL6 Note: Use Brake Fluid tester to check every 2 years).

Every seven years:

Have the air conditioning desiccant changed. (it absorbs and holds moisture in a mobile air conditioning system to help prevent corrosion).