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A 48 V system can provide more power, improve energy recuperation, [7] and allow up to an 85% decrease in cable mass. [10]12-volt systems can provide only 3.5 kilowatts, while a 48 V power could achieve 15 to 20 kW or even 50 kW. 48 volts is below the level that is considered safe in dry conditions without special protective measures. [11]
Initially, it was offered in 4 different trims: P2, P4, P6 and P8. The first three variants had a 19 kW motor powered by a 48V battery pack. The P8 variant had a 30 kW motor powered by a 72V battery pack. According to the manufacturer, the top variant was able to accelerate from 0 to 60 mph in 9.5 seconds. [8]
The CitiCar came in three models. All three models had a flat diagonal front, a flat roof, and a flat nearly vertical back. Early coupes, designated as model SV-36, had a 2.5 hp (1.9 kW) motor and 36V battery pack. The second model coupes, designated as model SV-48, had a 3.5 hp (2.6 kW) motor and 48V battery pack, and some small improvements.
The compressor is also fed by the same 48V lithium-ion battery pack which supports the SQ8's mild-hybrid system. Comprising a belt-driven alternator starter and regenerative brake system, it can power the SQ8 at speeds of up to 23 km/h (14 mph) and recover up to 8kW of energy under deceleration.
The battery pack also contains a variety of temperature, voltage, and current sensors. Collection of data from the pack sensors and activation of the pack relays are accomplished by the pack's battery monitoring unit (BMU) or BMS. The BMS is also responsible for communications with the vehicle outside the battery pack. [79]
While still a Belted Alternator Starter system, the system is named eAssist and includes a larger more powerful Hitachi-supplied [citation needed] 115-volt lithium-ion battery and a 11.2 kW (15.0 hp) motor-generator that delivers 79 lb⋅ft (107 N⋅m) of torque. The additional power provided by the more powerful battery and motor provides the ...
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