Yutong E12DD

Yutong E12DD
Yutong E12DD Electric Bus
Yutong E12DD Electric Bus
Manufacturer Zhengzhou Yutong Bus Co., Ltd.
Bodywork Yutong Integral
Years in operation 2020—Present
Operators TBC
Length 12 metre
Motor TBC
Accessibility TBC
Emission Standard Zero tailpipe emissions

The Yutong E12DD is a fully electric double-deck city bus manufactured by Yutong in China. The bus model shares its model name with the more prevalent Yutong E12 single-deck electric city bus.

10 units of the Yutong E12DD bus were procured by the Land Transport Authority in 2018 as part of efforts to build a more environmentally friendly public bus fleet. A further 10 more Yutong E12 single-deck electric buses would be acquired, for a total of 20 Yutong electric buses. In total, 60 electric buses were procured from three separate manufacturers at a total sum of S$50.64 million.

Bus operators in China are primary customers of the Yutong E12DD, with units operating in the Chinese cities of Guangzhou, Zhengzhou and Zhoukou.

Background

The Yutong E12DD is marketed as an electric city bus capable of being fitted as a sightseeing bus, with a large upper deck windshield, large side windows and a panoramic sunroof, along with a suite of configurable interiors features for passenger comfort.

The bus design incorporates large-capacity batteries which allow the bus to travel more than 200 km on a single charge, under urban road conditions. Yutong touts cost savings of over 30% over a 5-year period as compared to an equivalent diesel-powered double-deck bus. Constant-power charging is said to reduce charging times by 25%; allowing for a charging period of just 1.9 hours at night. However, the actual battery capacity of the Singapore units is to be confirmed.

Yutong ReCtrl Electric Drive

Yutong's Electric Drive Technology (Click to expand)

Yutong’s electric drive technology platform is called ReCtrl (or 睿控). In its most iteration, ReCtrl 4.0 (first released in 2017) combines four electric control technologies and four smart technologies as such:

  • Electric drivetrain
    — highly efficient electric motor replaces the traditional automatic transmission
  • Regenerative braking
    — motor acts as a generator during braking, recovering kinetic energy into electrical energy to be stored in the batteries
  • Electric steering
    — electro-hydraulic power steering requiring least steering effort
  • Electric air-conditioning
    — automatically-adjusted heating/cooling with independent zone control, offering at least 15% energy savings over traditional vehicle air-conditioners
  • Intelligent vehicle energy management system
    — overall management of energy consumption through onboard electronic control units and CAN bus network
  • Intelligent climate control
    — air-conditioning compressor reacts automatically to deliver optimum cooling capacity
  • Intelligent telematics
    — key vehicle operating parameters are transmitted over the internet for health and status monitoring
  • Intelligent charging
    — vehicle charging performance is recorded for monitoring

Introduction

The Yutong E12DD is a fully electric city bus manufactured by the Chinese company Zhengzhou Yutong Bus Co., Ltd (郑州宇通客车股份有限公司), which manufactures road vehicles (primarily buses). The E12DD is just one of Yutong’s electric bus products, alongside hybrid and regular diesel buses.

Photos of the Yutong E12DD were first circulated online in late August 2019, where the bus was spotted at a test centre in China.

The exterior bodywork styling appears to be modified off the original E12DD, featuring a different head design that possibly takes inspiration from the Yutong City Master. The Yutong E12DD is offered at a length of 12.3m as standard but could have been shortened for the Singapore market. Headlights are similar to that used on the BYD C6 and the STE-Linkker Autonomous Electric Bus.

The bus body is constructed out of high-strength steel. Features offered include IP68-rated electronics, electronically-controlled air suspension, dual-circuit air brakes with ABS among others, common to most modern buses. It is noted that a significant portion of space on the lower deck is occupied by batteries, hence the reduced passenger cabin space.

Basic Technical Specifications
Electric Motor TBA
Battery TBA
Bodywork Yutong integral bodywork. Built in Zhengzhou, China.
EDS TBC
PIDS TBC
Passenger Capacity TBC
Additional Specifications TBC

Gallery:

See Also:
External Links & References:

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4 thoughts on “Yutong E12DD

  • 6 September 2019 at 3:38 AM
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    Plain ugly,cheapo side mirrors and doors just like SBST spec buses..One thing is good there is upper taillights which the Euro VI A95/Enviro500 And B9TL is lacking

    Reply
  • 2 September 2019 at 11:29 AM
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    They really need high power batteries for the aircon and our climate.Doesnt mean its successful in China or other 4 seasons countries it would be successful here

    Reply
  • 1 September 2019 at 4:45 PM
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    So ugly… The front reminds me of Dennis Tridents.

    Reply
    • 4 September 2019 at 10:58 PM
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      insult to dennis tridents tbh…. why is SG procuring cheap crap from china nowadays…

      Reply

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