McLean, VA, United States
McLean, VA, United States

SAIC Motor Corporation Limited is a Chinese state-owned automotive manufacturing company headquartered in Shanghai, China with multinational operations. One of the "Big Four" Chinese automakers , the company had the largest production volume of any Chinese automaker in 2014 making more than 4.5 million vehicles. Its manufacturing mix is not wholly consumer offerings, however, as many SAIC passenger vehicles are pint-sized commercial vans.SAIC traces its origins to the early years of the Chinese automobile industry in the 1940s, and SAIC was one of the few carmakers in Mao's China, making the Shanghai SH760. Currently, it participates in the oldest surviving Sino-foreign car making joint venture, with Volkswagen, and in addition has had a joint venture with General Motors since 1998. SAIC products sell under a variety of brand names, including those of its joint venture partners. Two notable brands owned by SAIC itself are MG, a historic British car marque, and Roewe, one of the few domestic Chinese luxury car brands. Wikipedia.


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Zhu J.,SAIC
Biotechnology Advances | Year: 2012

Mammalian cell expression has become the dominant recombinant protein production system for clinical applications because of its capacity for post-translational modification and human protein-like molecular structure assembly. While expression and production have been fully developed and Chinese hamster ovary cells are used for the majority of products both on the market and in clinical development, significant progresses in developing and engineering new cell lines, introducing novel genetic mechanisms in expression, gene silencing, and gene targeting, have been reported in the last several years. With the latest analytical methods development, more attention is being devoted towards product quality including glycol profiling, which leads to better understanding the impact of culture condition during production. Additionally, transient gene expression technology platform plays more important role in biopharmaceutical early development stages. This review focused on the latest advancements in the field, especially in active areas such as expression systems, glycosylation impact factors, and transient gene expression. © 2011 Elsevier Inc.


Systems and methods are described herein for managing the operations of a plurality of microgrid modules. A microgrid module includes transformers and/or power converters necessary for modifying the input AC or DC power sources to meet the required characteristics of the output power. The microgrid module further comprises a control software module and a power router software module. The control software module receives data from sensors in the microgrid module and controls the flow of power with controllable elements. The power router software module controls the operation of the power router. The power router can detect changes in demand for power within the microgrid module or from other microgrid modules. The power router can adjust the flow of power between the microgrid modules in response to changes in the supply of power to the microgrid module and changes in the demand for power from the microgrid module.


Patent
Saic | Date: 2016-05-18

A dual-motor power system or a dual-motor hybrid power system for a vehicle comprises a first motor (1), a second motor (2), an intermediate shaft (13), a first gear set (7, 14) disposed between a first driving shaft (3) and the intermediate shaft (13). The first driving shaft (3) couples with the intermediate shaft (13) via the first gear set (7, 14). A second gear set (12, 15) is disposed between a second driving shaft (4) and the intermediate shaft (13). A single synchronizer (8) is disposed around the second driving shaft (4). The synchronizer (8) can be switched between a neutral position, a first-speed-ratio position, and a second-speed-ratio position. In the neutral position, the second driving shaft (4) is decoupled from the first (7, 14) and second (12, 15) gear sets. In the first-speed-ratio position, the synchronizer (8) couples the second driving shaft (4) with the intermediate shaft (13) via the first gear set (7, 14). In the second-speed-ratio position, the synchronizer (8) couples the second driving shaft (4) with the intermediate shaft (13) via the second gear set (12, 15).


Patent
Saic | Date: 2016-05-25

A transmission control system (120) for a hybrid-power driving system includes at least a gear shifting actuation module (132) to control engagement of specific gearwheels and a clutch actuation module (142) to control a clutch (40) that couples an engine (30) to the transmission (70). Gear shifts are required for each of the engine (30) and an electric motor (50) in the hybrid-power driving system. By selectively controlling the clutch (40) and engagement of specific gearwheels, power loss associated with a gear shift for one of these power sources (30, 50) can be directly offset by using the other power source (50, 30).


A controlling apparatus and method for an electric drive transmission used in a dual-motor electric vehicle are disclosed, wherein when the second motor 2 is in the zero torque state, the synchronizer is shifted to a neutral position, the second motor the required torque being kept to be zero; after shifted to the neutral position, if the target gear position is the neutral position, gearshifting is completed, an if the target gear position is not the neutral position, speed control to the second motor is conducted to adjust its speed towards a target speed; once the second motor is adjusted to the target speed, the second motor is subjected to zero torque control, the second motor the required torque being zero; once the second motor comes into a zero torque state, the synchronizer 6 is shifted to a target gear position, the required torque of the second motor being kept to be zero; once the synchronizer is located in the target gear position, the required torque of the second motor changes towards a target value at a proper changing rate; once the second motor real torque and is equal to or larger than target torque, gearshifting is judged as completed. Loss in wheel driving torque caused by the second motor in the whole gearshifting procedure is compensated by the first motor 1, so that gearshifting without power interruption can be achieved.


The disclosure discloses a hybrid vehicle and a power-train torque control method, the method comprising the steps of: (1) driver torque requirement interpretation; and (2) multi-power source torque distribution and coordination. The hybrid power-train torque control method can ensure a consistent driving feeling of the driver within real-time power source torque ability and facilitate match calibration of the hybrid power-train.


Patent
Saic | Date: 2016-05-25

A hybrid-power driving system (100) comprising an input shaft (1) having disposed thereon a first driving gearwheel (11), a second driving gearwheel (12), a third driving gearwheel (13), and a reverse-gear driving gearwheel (14), wherein a first synchronizer (9) is disposed between the first driving gearwheel (11) and the second driving gearwheel (12) and a second synchronizer (8) is disposed between the third driving gearwheel (13) and the reverse-gear driving gearwheel (14); a first intermediate shaft (4) having disposed thereon a first speed-reducing gearwheel (22), a first driven gearwheel (15), a second driven gearwheel (16), a third driven gearwheel (17), and a reverse-gear driven gearwheel (18), wherein a third synchronizer (10) is disposed between the first driven gearwheel (15) and the second driven gearwheel (16); a second intermediate shaft (5) having disposed thereon a first idler gearwheel (20) and a second idler gearwheel (21); a first idler shaft (3) having disposed thereon a reverse-gear idler gearwheel (19); a motor shaft (2); and a differential (60) having a second speed-reducing gearwheel (23), wherein the first driving gearwheel (11) meshes with the first driven gearwheel (15), the second driving gearwheel (12) meshes with the second driven gearwheel (16), the third driving gearwheel (13) meshes with the third driven gearwheel (17), the reverse-gear driving gearwheel (14) meshes with the reverse-gear idler gearwheel (19), the reverse-gear driven gearwheel (18) meshes with the reverse-gear idler gearwheel (19), the first idler gearwheel (20) meshes with the first driven gearwheel (15), the second idler gearwheel (21) meshes with the second driven gearwheel (16), and the first speed-reducing gearwheel (22) meshes with the second speed-reducing gearwheel (23).


Patent
Saic | Date: 2016-05-25

A hybrid-power driving system comprising an input shaft (1) carrying a first driving gearwheel (10), a second driving gearwheel (11), a third driving gearwheel (12), and a fourth driving gearwheel (13) disposed thereon; a first synchronizer (7), disposed on the input shaft (1), for releasably synchronizing at least one of the first driving gearwheel (10) and the second driving gearwheel (11) to the input shaft (1), a second synchronizer (26), disposed on the input shaft (1), for releasably synchronizing at least one of the third driving gearwheel (12) and the fourth driving gearwheel (13) to the input shaft (1); an output shaft (2) carrying a speed-reducing gearwheel (14), a first driven gearwheel (15), a second driven gearwheel (18), and a third driven gearwheel (19) disposed thereon; a first intermediate shaft (5) carrying a fourth driven gearwheel (16) and a fifth driven gearwheel (17) disposed thereon, wherein the first intermediate shaft (5) includes a hollow portion and is coaxial to the output shaft (2); a third synchronizer (9), disposed on the output shaft (2), for releasably synchronizing at least one of the first driven gearwheel (15) and both the fourth driven gearwheel (16) and the fifth driven gearwheel (17) to the output shaft (2); a second intermediate shaft (3) carrying a sixth driven gearwheel (20), a seventh driven gearwheel (21), an eighth driven gearwheel (22), and a ninth driven gearwheel (23) disposed thereon; a motor shaft (4) carrying a fifth driving gearwheel (24) disposed thereon; and a final driven gearwheel (25).


A dual motor power system for a pure electric vehicle and a control method thereof are disclosed, wherein within a range defined between upper and lower torque thresholds for the operations of one of the two motors under current vehicle speed, the torque of this motor is changed stepwise with a certain torque step; the required torque of the other motor is determined based on the torque distribution relation of the first and second motors; and the synchronized efficiency of the power system is determined based on the torques of the first and second motors so that the optimal synchronized efficiency of the power system is ergodically searched out, and the optimal working points of the two motors and the corresponding gear of the second motor are determined then.


Patent
Saic | Date: 2016-05-25

A transmission control system for a hybrid-power driving system comprising a transmission (70) includes a gear shifting actuation module (132) to control engagement of specific gearwheels and a clutch actuation module (142) to control a clutch (40) that couples an engine (30) to the transmission (70). Gear shifts are required for each of the engine (30) and an electric motor (50) in the hybrid-power driving system. By selectively controlling the clutch (40) and engagement of specific gearwheels, the transmission control system can start the engine (30) when the vehicle is initially powered by the electric motor (50) alone. Starting the internal combustion engine (30) in this case switches the vehicle from a pure motor driving mode to a hybrid driving mode.

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