"Its torque converter technology multiplies engine power to significantly improve startability and launch, resulting in higher operational productivity, maximizing the benefits of a natural gas engine."Īllison Automatics are perfectly suited to natural gas engines on city buses. "Allison's fully automatic transmission has its patented Continuous Power Technology™, which delivers smoother, seamless shifts providing superior passenger comfort," said Zhengwei.
Specifically designed for inner city traffic, the 8-meter-long low-entry bus model complies with Euro V pollutant emission standards, and meets the operational needs of Yerevan’s public transport system. Natural gas buses reduce engine noise and emissions, resulting in an optimized solution for densely populated metropolises, as compared to buses with diesel engines. Allison Automatics are ideal for city buses in heavy traffic conditions," said Zhang Zhengwei, Director of Zhongtong Bus North China.Īs the capital of Armenia, Yerevan has posed challenges to city bus manufacturers due to its hot summers, cold winters and narrow downtown roadways. “Allison’s products offer high reliability, stability, greater fuel economy and easier control of the bus that greatly reduces driver’s stress. to deliver 211 compressed natural gas (CNG) city buses equipped with Allison T270R transmissions to Yerevan, the capital of Armenia. In some countries, 50 Hertz (cycles per second) is the Alternating Current (AC) frequency.BEIJING-( BUSINESS WIRE)-Allison Transmission, a leading designer and manufacturer of conventional and electrified vehicle propulsion solutions and the largest global manufacturer of medium- and heavy-duty fully automatic transmissions for commercial and defense vehicles, is pleased to announce a partnership with leading Chinese bus manufacturer Zhongtong Bus Holding Co., Ltd.In the US, 60 Hertz (cycles per second) is the Alternating Current (AC) frequency.The standard for delivering electrical power changed from Direct Current (DC) to Alternating Current (AC) because Alternating Current (AC) delivers electrical power more efficiently over long distances. Now Alternating Current (AC), where the power flow is constantly alternating direction, is the standard for delivering electrical power. In the earliest days Direct Current (DC), where the power flows in one direction like a water hose, was the standard for delivering electrical power. In electric power, one term describes the pressure or force (Voltage) and two terms describe the speed or flow (Current and Amperes). In mechanical power, many terms describe the pressure or force (Foot Pounds, Pounds per Square Inch, etc.) and many terms describe the speed or flow (Rotating Speed, Gallons per Minute, etc.). In both the power delivered is calculated by multiplying pressure (force) times flow (speed). They’re very different, but both deliver power using pressure (force) and flow (speed). If you’re not electrically minded, think of 3 Phase vs Single Phase electric power as something easier to visualize like mechanical power.
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