Allison Transmission: Ауыр жүк көлігіне арналған автомат беру қораптарын өндірушісі

American manufacturer of commercial duty automatic transmissions

Allison Transmission Holdings Inc. is an American manufacturer of commercial duty automatic transmissions and hybrid propulsion systems. Allison products are specified by over 250 vehicle manufacturers and are used in many market sectors, including bus, refuse, fire, construction, distribution, military, and specialty applications. With headquarters in Indianapolis, Indiana, Allison Transmission has a presence in more than 150 countries and manufacturing facilities in Indianapolis, Chennai, India, and Szentgotthárd, Hungary.

Allison began in 1909 when James A. Allison, along with three business partners, helped fund and build the Indianapolis Motor Speedway. In 1911, Allison's new track held the first Indianapolis 500 mile race. In addition to funding several race teams, James Allison founded the Speedway Racing Team Company on September 14, 1915 and quickly gained a reputation for his work on race cars and automotive technology in general. Allison built a shop near the track and changed the team's name to the Allison Experimental Company; the shop later became Plant No. 1. Shortly after the sale to General Motors on April 1, 1929, Allison engineers began work on a 12 cylinder engine to replace the aging Liberty engines. The result was the V1710 12 cylinder aircraft engine and it made the company, renamed to the Allison Division of GM in 1934, Plant 3 was built in 1939, a factory to build V1710 engines. Due to demand during World War II, Allison would add a second factory (Plant 5) and 23,000 new employees; by the end of the war, Allison had built 70,000 V1710 engines. Allison stopped producing the CD 850 in 1986, but a licensed version was produced in Spain for more than a decade afterward. The Allison 850 series torque converter was a crucial component in the post war development of self propelled railcars, most notably the Budd Rail Diesel Car, which first went into service in 1950. Pairing with a GM Series 110 "pancake" diesel engine mounted under the railcar floor enabled the entire power system to be kept outside the car body, making the full length of the car available for revenue. The torque converter enabled unprecedented rates of acceleration before locking into direct drive.

At approximately the same time the CD 850 was going into production, GMC Truck and Coach Division requested that GM develop a V Drive transmission with a torque converter in 1945 for transit bus use, replacing the Spicer manual transmission then offered. exclusive to that brand for the first year, but was soon offered by other truck manufacturers including Ford (1957), Reo (1958), Dodge (1958), Diamond T (1959), White (1961), and International Harvester (1961); production of the MT 25 continued into the early 1970s. which Allison developed jointly with Hydramatic Division in the late 1960s; the AT 540 was targeted specifically for on highway use and shared similarities with automobile transmissions to reduce the cost penalty to equip on highway trucks with automatic transmissions. The first electronic controls were fitted to the off highway DP 8000 series transmission in 1971. Electronic controls (branded the Allison Transmission Electronic Control or ATEC system) were added to the MT/HT/V730 in 1983, improving fuel economy by more precisely controlling shifts. and B (T drive buses) lines;

In 2007, GM sold Allison Transmission to private equity firms Carlyle Group and Onex Corporation for US$5.6 billion.

In 2020, Allison introduced a line of motor integrated electric axles, branded eGen Power. The first model, 100D, was designated for its gross axle weight rating (GAWR) of and (D)ual electric motors; 100D has a continuous and peak power output of , respectively, with a maximum torque of In 2021, Allison expanded the range with the 100S (a single motor variant of the 100D, with continuous and peak power output of , respectively and a maximum of torque) and the 130D (a variant of the 100D with a higher GAWR for the European and Asia Pacific markets). The Allison eGen Power integrated axle also includes a multi speed gearbox to optimize both launch and cruising speeds; it was designed to be a drop in replacement for existing axles for medium and heavy duty trucks and buses, allowing more flexibility in battery placement.

Hybrid buses will save an estimated of fuel annually in Washington D. C., Philadelphia and Minneapolis/St. Paul
Low Emissions Hybrid Buses.