151results about How to "Maximize drive efficiency" patented technology

A planetary gear train of an automatic transmission may include an input shaft; an output shaft; first to fourth planetary gear sets and six control elements disposed at a portion selectively connecting the rotation elements and the rotation elements or a portion selectively connecting the rotation elements and the transmission housing, wherein the input shaft is continuously connected to the third rotation element, the output shaft is continuously connected to the twelfth rotation element, the first rotation element is continuously connected to the transmission housing, the fourth rotation element is continuously connected to the seventh rotation element, the fourth rotation element is continuously connected to the tenth rotation element, the eighth rotation element is continuously connected to the twelfth rotation element, the fifth rotation element is selectively connected to the transmission housing.

A planetary gear train of an automatic transmission for a vehicle is provided. The planetary gear train includes an input shaft that receives power of an engine and an output shaft that outputs the power. Additionally, four planetary gear sets are provided, each including three rotational elements. Various shafts then either directly or selectively connect the rotational elements. The planetary gear train maximizes driving efficiency of the engine and improves power delivery performance and fuel consumption through the achievement of the increased shift-stages of the automatic transmission.

A planetary gear train of an automatic transmission for a vehicle may include an input shaft receiving torque of an engine, an output shaft outputting torque, a first planetary gear set, a second planetary gear set, a third planetary gear set, a fourth planetary gear set, a first shaft, a second shaft, a third shaft, a fourth shaft, a fifth shaft selectively connectable to the second shaft, a sixth shaft connected to the input shaft, and selectively connectable to each of the third shaft and the fourth shaft, a seventh shaft connected to the output shaft, and an eighth shaft.

A planetary gear set of an automatic transmission for a vehicle may include input and output shafts for receiving and outputting torques, first to fourth planetary gear sets respectively forming first to third, fourth to sixth, seventh to ninth, and tenth to twelfth rotational elements, and six control elements each of which selectively interconnects a corresponding pair among the input and output shafts, the rotational elements, and a transmission housing, where the input and output shafts are fixedly connected to the first and eleventh rotational elements respectively, respective pairs of the first and sixth rotational elements, the second and ninth rotational elements, the third and tenth rotational elements, the fifth and eleventh rotational elements are fixedly interconnected, and the seventh rotational element is selectively connected to the transmission housing.

A planetary gear train of an automatic transmission for a vehicle may include an input shaft receiving torque of an engine, an output shaft configured to output changed torque of the engine, a first planetary gear set including first, second, and third rotation elements, a second planetary gear set including fourth, fifth, and sixth rotation elements, a third planetary gear set including seventh, eighth, and ninth rotation elements, and a fourth planetary gear set including tenth, eleventh, and twelfth rotation elements.

A planetary gear train of an automatic transmission for a vehicle may include an input shaft receiving power of an engine, an output shaft configured to output shifted power, a first planetary gear set including first, second, and third rotation elements, a second planetary gear set including fourth, fifth, and sixth rotation elements, a third planetary gear set including seventh, eighth, and ninth rotation elements, a fourth planetary gear set including tenth, eleventh, and twelfth rotation elements, and six control elements which are disposed between the rotation elements, and disposed at portions where the rotation elements are selectively connected to a transmission housing.

A planetary gear set of an automatic transmission for a vehicle may include an input shaft for receiving an engine torque, an output shaft for outputting a shifted torque of the engine, a first planetary gear set including first, second, and third rotational elements, a second planetary gear set including fourth, fifth, and sixth rotational elements, a third planetary gear set including seventh, eighth, and ninth rotational elements, a fourth planetary gear set including tenth, eleventh, and twelfth rotational elements, and six control elements for selectively interconnecting the rotational elements and a transmission housing.

A planetary gear set of an automatic transmission for a vehicle may include an input shaft for receiving an engine torque, an output shaft for outputting a shifted torque of the engine, a first planetary gear set including first, second, and third rotational elements, a second planetary gear set including fourth, fifth, and sixth rotational elements, a third planetary gear set including seventh, eighth, and ninth rotational elements, a fourth planetary gear set including tenth, eleventh, and twelfth rotational elements, and six control elements each of which is for selectively interconnecting at least one rotational element among twelve rotation elements and another rotational element among the twelve rotational elements or the input shaft, or between at least one rotational element among the twelve rotational elements and a transmission housing.

A planetary gear train of an automatic transmission for a vehicle is provided. Ten or more forward speeds and one or more reverse speed are achieved by a planetary gear train of an automatic transmission for a vehicle. The vehicle includes an input shaft, an output shaft, four planetary gear sets respectively having three rotational elements, and six control elements to selectively connect the rotational elements and a transmission housing.

A planetary gear train of an automatic transmission may include: an input shaft; an output shaft; first to fourth planetary gear sets; and six control elements being disposed at a portion where one of the rotating element is selectively connected to another rotating element, or the rotating element is selectively connected to the transmission housing, wherein the input shaft is continuously connected to the second rotating element, the output shaft is continuously connected to the twelfth rotating element, the first rotating element is continuously connected to the seventh rotating element, the fourth rotating element is directly connected to the transmission housing, the fifth rotating element is continuously connected to the eleventh rotating element, and the ninth rotating element is continuously connected to the tenth rotating element.

A planetary gear train for an automatic transmission may include input shaft, output shaft, first to fourth planetary gear sets and seven friction elements disposed to selectively connect the rotation elements with the rotation element and selectively connect the rotation elements with a transmission housing, and wherein the input shaft is / are continuously connected to the second rotation element, the output shaft is / are continuously connected to the eleventh rotation element, the third rotation element is / are continuously connected to the fifth rotation element, the third rotation element is / are continuously connected to the tenth rotation element, the fourth rotation element is / are continuously connected to the ninth rotation element, the sixth rotation element is / are continuously connected to the seventh rotation element, the input shaft is / are selectively connected to the sixth rotation element, wherein three friction elements among seven friction elements is / are operated at each speed stage.

A rumble strip cutting machine having a drum that can be shifted from one side of the machine to the other. The machine includes a piston wheel that imparts an up and down motion to the frame so that rumble strips can be cut at desired intervals as the machine is driven along the road shoulder. The piston wheel includes a wheel mounting assembly on each side of the machine so that the wheel can be conveniently shifted from one side of the machine to the other. Additional structures allow for the flexing of the machine frame, applying pressure to the cutting drum, adjusting the depth of cut, tightening the belt used to drive the drum, and lifting the machine for job site transportation. The machine enables a method of cutting rumble strips close to obstructions on narrow shoulders while driving the machine in the direction of moving traffic.

A planetary gear train of an automatic transmission for vehicle may include an input shaft receiving power of an engine, an output shaft outputting shifted power of the engine, a first planetary gear set including a first rotation element, a second rotation element, and a third rotation element, a second planetary gear set including a fourth rotation element, a fifth rotation element, and a sixth rotation element, a third planetary gear set including a seventh rotation element, an eighth rotation element, and a ninth rotation element, a fourth planetary gear set including a tenth rotation element, an eleventh rotation element, and a twelfth rotation element, and six control elements disposed at positions selectively connecting the rotation elements to each other or at positions selectively connecting the rotation elements and a transmission housing.

A planetary gear train of an automatic transmission for a vehicle is disclosed and may include: an input shaft receiving torque of an engine; an output shaft outputting torque; a first, second, third and fourth planetary gear set, each having three rotation elements, together first-twelfth rotation elements; a first shaft fixedly connected to a second rotation element and selectively connected to the input shaft; a second shaft fixedly connected to a fourth rotation element and selectively connected to the input shaft; a third shaft fixedly connected to an eighth rotation element and a twelfth rotation element, and fixedly connected to the output shaft; a fourth shaft fixedly connected to a first rotation element, a fifth rotation element, and a ninth rotation element; a fifth shaft connected to a sixth rotation element and an eleventh rotation element; and a plurality of shafts selectively connected to a transmission housing.

A planetary gear train of an automatic transmission for a vehicle may include: an input shaft receiving torque of an engine; an output shaft outputting torque; a direction changer disposed on an input shaft side and transmitting the torque of the engine to the input shaft with or without change of rotation direction, or disposed on an output shaft side and outputting the torque of the output shaft with or without change of rotation direction; a first planetary gear set including first, second and third rotation elements; a compound planetary gear set including fourth, fifth, sixth, and seventh rotation elements by combining second and third planetary gear sets; a fourth planetary gear set including eighth, ninth, and tenth rotation elements.

Disclosed is a variable speed brushless direct current (BLDC) motor drive circuit. The circuit includes a plurality of high-side and low-side controlled switches coupled in a three-phase bridge configuration for commutating a BLDC motor, each phase of the bridge being connected to a corresponding phase of the motor, a controller for providing a drive signal to drive each of the high-side and low-side switches, and a speed control loop for controlling the motor by PWM of a DC bus voltage to achieve a constant motor speed. The speed control loop includes a pulse circuit receiving the drive signals provided from the controller for controlling the high-side switches and for providing a pulse signal that is related to a desired motor speed, a plurality of high-side drivers for driving the high-side switches, each high-side switch being coupled to a respective high-side driver, and a plurality of gating circuits each receiving the pulse signal from the pulse circuit and a drive signal for a respective high-side controller from the controller for generating a pulse width modulation (PWM) control signal having a pulse duration determined by said pulse signal from said pulse circuit to thereby drive each of the high-side drivers to modulate their corresponding high-side switches.

A planetary gear train of an automatic transmission for a vehicle may include an input shaft receiving torque of an engine, an output shaft outputting changed torque of the engine, a first planetary gear set including a first rotation element, a second rotation element, and a third rotation element, a second planetary gear set including a fourth rotation element, a fifth rotation element, and a sixth rotation element, a third planetary gear set including a seventh rotation element, an eighth rotation element, and a ninth rotation element, a fourth planetary gear set including a tenth rotation element, an eleventh rotation element, and a twelfth rotation element, and first, second, third, fourth, fifth, sixth and seventh rotation shafts, each connected to at least one of the first to twelfth rotation elements.

A planetary gear train of an automatic transmission for a vehicle may include an input shaft receiving torque of an engine, an output shaft outputting changed torque, a first planetary gear set including first, second, and third rotation elements, a second planetary gear set including fourth, fifth, and sixth rotation elements, a third planetary gear set including seventh, eighth, and ninth rotation elements, a fourth planetary gear set including tenth, eleventh, and twelfth rotation elements, and seven friction elements disposed between at least one rotation element among the twelve rotation elements and another rotation element or the input shaft, or between at least one rotation element among the twelve rotation elements and a transmission housing.

A planetary gear train of an automatic transmission for a vehicle may include: an input shaft receiving torque of an engine; an output shaft outputting changed torque; a first planetary gear set including a first rotation element, a second rotation element, and a third rotation element; a second planetary gear set including a fourth rotation element, a fifth rotation element, and a sixth rotation element; a third planetary gear set including a seventh rotation element, an eighth rotation element, and a ninth rotation element; and a fourth planetary gear set including a tenth rotation element, an eleventh rotation element, and a twelfth rotation element.

A planetary gear train of an automatic transmission for a vehicle may include an input shaft receiving torque of an engine, an output shaft outputting changed torque of the engine, a first planetary gear set, a second planetary gear set, a third planetary gear set, a fourth planetary gear set, a first rotation shaft selectively connectable to the input shaft, a second rotation shaft directly connected to the input shaft, a third rotation shaft selectively connectable to a transmission housing, a fourth rotation shaft, a fifth rotation shaft selectively connectable to at least one of the second rotation shaft and the third rotation shaft, a sixth rotation shaft selectively connectable to the first rotation shaft, and directly connected to the output shaft, and a seventh rotation shaft selectively connectable to the transmission housing.

A planetary gear train of an automatic transmission for vehicle may include an input shaft; an output shaft; first to fourth planetary gear sets and six control elements disposed at a portion selectively connecting the rotation elements and the rotation elements or a portion selectively connecting the rotation elements and the transmission housing, wherein the input shaft is continuously connected to the third rotation element, the output shaft is continuously connected to the eleventh rotation element, the second rotation element is continuously connected to the eleventh rotation element, the third rotation element is continuously connected to the fourth rotation element, the sixth rotation element is continuously connected to the eighth rotation element, the ninth rotation element is continuously connected to the tenth rotation element, the fifth rotation element is selectively connected to the transmission housing.

A planetary gear train of an automatic transmission for a vehicle may include an input shaft to receive torque of an engine, an output shaft to output changed torque of the engine, a first planetary gear set including first, second, and third rotation elements, a second planetary gear set including fourth, fifth, and sixth rotation elements, a third planetary gear set including seventh, eighth, and ninth rotation elements, and a fourth planetary gear set including tenth, eleventh, and twelfth rotation elements.

A planetary gear train of an automatic transmission for a vehicle may include an input shaft receiving torque of an engine, an output shaft outputting changed torque of the engine, a first planetary gear set including first, second, and third rotation elements, a second planetary gear set including fourth, fifth, and sixth rotation elements, a third planetary gear set including seventh, eighth, and ninth rotation elements, a fourth planetary gear set including tenth, eleventh, and twelfth rotation elements, and seven friction elements disposed between at least one rotation element among the twelve rotation elements and another rotation element or the input shaft, or between at least one rotation element among the twelve rotation elements and a transmission housing.

A planetary gear train of an automatic transmission for a vehicle may include: an input shaft receiving torque of an engine; an output shaft outputting changed torque; a first planetary gear set including a first rotation element, a second rotation element, and a third rotation element; a second planetary gear set including a fourth rotation element, a fifth rotation element, and a sixth rotation element; a third planetary gear set including a seventh rotation element, an eighth rotation element, and a ninth rotation element; and a fourth planetary gear set including a tenth rotation element, an eleventh rotation element, and a twelfth rotation element.

A planetary gear train of an automatic transmission for a vehicle may include: an input shaft which receives power from an engine; an output shaft which outputs power changed in speed; a first planetary gear set which has first, second, and third rotating elements; a second planetary gear set which has fourth, fifth, and sixth rotating elements; a third planetary gear set which has seventh, eighth, and ninth rotating elements; a fourth planetary gear set which has tenth, eleventh, and twelfth rotating elements; and six control elements wherein one of the six control elements is disposed at a portion where one of the first to twelfth rotating elements is selectively connected to another of the first to twelfth rotating elements, or at a portion where the one of the first to twelfth rotating elements is selectively connected to the transmission housing.

A planetary gear train of an automatic transmission for a vehicle may include: an input shaft receiving torque of an engine; an output shaft outputting changed torque; a first planetary gear set including a first rotation element, a second rotation element, and a third rotation element; a second planetary gear set including a fourth rotation element, a fifth rotation element, and a sixth rotation element; a third planetary gear set including a seventh rotation element, an eighth rotation element, and a ninth rotation element; and a fourth planetary gear set including a tenth rotation element, an eleventh rotation element, and a twelfth rotation element.

A planetary gear train of an automatic transmission for vehicle may include an input shaft receiving power of an engine, an output shaft outputting shifted power of the engine, a first planetary gear set including a first rotation element, a second rotation element, and a third rotation element, a second planetary gear set including a fourth rotation element, a fifth rotation element, and a sixth rotation element, a third planetary gear set including a seventh rotation element, an eighth rotation element, and a ninth rotation element, a fourth planetary gear set including a tenth rotation element, an eleventh rotation element, and a twelfth rotation element, and six control elements disposed at positions selectively connecting the rotation elements to each other or at positions selectively connecting the rotation elements and a transmission housing.

A planetary gear train of an automatic transmission for a vehicle may include an input shaft receiving torque of an engine, an output shaft configured to output changed torque of the engine, a first planetary gear set including first, second, and third rotation elements, a second planetary gear set including fourth, fifth, and sixth rotation elements, a third planetary gear set including seventh, eighth, and ninth rotation elements, and a fourth planetary gear set including tenth, eleventh, and twelfth rotation elements.