Gothenburg, Sweden
Gothenburg, Sweden

The Volvo Group is a Swedish multinational manufacturing company headquartered in Gothenburg. Its principal activity is the production, distribution and sale of trucks, buses and construction equipment. Volvo also supplies marine and industrial drive systems and financial services. Although the two firms are still often conflated, Volvo Cars, also based in Gothenburg, has been a totally separate company since it was sold off in 1999. The companies still share the Volvo logo and co-operate in running the Volvo Museum.Volvo was established in 1915 as a subsidiary of SKF, the ball bearing manufacturer, however the Volvo Group and Volvo Cars consider themselves to have been officially founded on 14 April 1927, when the first car, the Volvo ÖV 4 series, affectionately known as "Jakob", rolled out of the factory in Hisingen, Gothenburg.Volvo means "I roll" in Latin, conjugated from "volvere", in relation to ball bearings. The brand name Volvo was originally registered as a trademark in May 1911 with the intention to be used for a new series of SKF ball bearings. This idea was only used for a short period and SKF decided to simply use "SKF" as the trademark for all its bearing products.In 1924, Assar Gabrielsson, an SKF sales manager, and engineer Gustav Larson, the two founders, decided to start construction of a Swedish car. Their vision was to build cars that could withstand the rigors of the country's rough roads and cold temperatures.AB Volvo began activities on 10 August 1926. After one year of preparations involving the production of ten prototypes the firm was ready to commence the car-manufacturing business within the SKF group. AB Volvo was introduced at the Stockholm stock exchange in 1935 and SKF then decided to sell its shares in the company. Volvo was delisted from NASDAQ in June 2007, but remains listed on the Stockholm exchange. Wikipedia.

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Disclosed are: a device for controlling an engine and a hydraulic pump of construction equipment, capable of increasing fuel efficiency by controlling an engine speed and a hydraulic pump discharge flow rate according to the load of a work device; and a control method therefor. The device for controlling the engine and a hydraulic pump of construction equipment, according to the present invention, comprises: a fuel efficiency selection mode means; an engine RPM control means; a hydraulic pump control means; a work device operation sensing means; and a controller having a first control mode such that in the case of selecting the fuel saving mode, the engine RPM is outputted at the RPM lower than that of the general mode while a swash plate swivel angle of the hydraulic pump is increased corresponding to the operation amount of the work device lever, and in the case of the swash plate swivel angle of the hydraulic pump reaching the maximum angle, the engine RPM is increased so as to discharge the flow rate corresponding to the operation amount of the work device lever.


There is provided a hybrid powertrain (300) including: a combustion engine (310); an electric machine arrangement (360); a gearbox (500) operable to receive motive power from at least one of the combustion engine (310) and the electric machine arrangement (360) for providing motive power to a load (530) of the powertrain (300); and the powertrain (300) is configurable in operation so that its combustion engine (310) is switchable between an inactive state and an active state, the combustion engine (310) requiring to be cranked to switch it from its inactive state to its active state.Application of cranking torque to the combustion engine (310) is controlled in operation to substantially temporally coincide with a gear change in the gearbox (500).


Disclosed is a drive control device for the construction equipment capable of reducing shock generation and smoothly operating a work device when the work device is operated during the driving, which comprises; a first and second hydraulic pumps and a pilot pump, a first work device and a first drive motor operated by a hydraulic oil of the first hydraulic pump, a second work device and a second drive motor operated by a hydraulic oil of the second hydraulic pump, a first drive control valve and a first work device control valve that are provided on the supply path of the first hydraulic pump, a second drive control valve and a second work device control valve that are provided on the supply path of the second hydraulic pump, a linear drive control valve that is provided at the upper side of the supply path of the second hydraulic pump, a parallel path having an inlet branched and connected to the upper side of the supply path of the second hydraulic pump and an outlet connected to the inlet port of the second work device control valve, a branch path having an inlet branched and connected to a predetermined position of the parallel path and an outlet branched and connected to a path between the linear drive control valve and the second drive control valve, a fixed orifice provided on the branch path, and a first ratio control valve provided on a path between the pilot pump and the linear drive control valve.


Patent
Volvo | Date: 2017-03-01

The object of the present invention is to provide an inventive fuel system comprising a low pressure fuel system (4), a high-pressure fuel pump (5), a common rail (6), at least one fuel injector (7), and an engine management system (20). The engine management system (20) is adapted to initiate a recirculating cooling fuel flow through at least the high-pressure fuel pump (5) for avoiding fuel boiling by means of:said high-pressure fuel pump (5) being adapted to increase a target pressure of the fuel within the common rail (6) above a threshold level, the fuel system further comprising a high-pressure fuel relief valve (14) that is arranged downstream of said high-pressure fuel pump (5) and is connected to said low pressure fuel system (4), which high-pressure fuel relief valve (14) is adapted to open above said threshold level, such that at least part of the fuel supplied by said high-pressure fuel pump (5) is returned to said low pressure fuel system (4) via said high-pressure fuel relief valve (14).


There is provided a hybrid powertrain (300) including: a combustion engine (310); an electric machine arrangement (360); a gearbox (500) operable to receive motive power from at least one of the combustion engine (310) and the electric machine arrangement (360) for providing motive power to a load (530) of the powertrain (300); and the powertrain (300) is configurable in operation so that its combustion engine (310) is switchable between an inactive state and an active state, the combustion engine (310) requiring to be cranked to switch it from its inactive state to its active state.Application of cranking torque to the combustion engine (310) is controlled in operation to substantially temporally coincide with a gear change in the gearbox (500).


Disclosed are a control device for confluence flow rate of a working device and a control method therefor, the control device being capable of minutely operating a working device when a flow rate supplied to the working device is merged or blocked. Provided is a control device for confluence flow rate of a working device for construction machinery according to the present invention, the control device comprising: first and second hydraulic pumps and a pilot pump; first and second hydraulic operating levers; first and second working devices operated by operating oil supplied from the first and second hydraulic pumps; a control valve for the first working device, installed on a supply path between the first hydraulic pump and the first working device; a control valve for the second working device, installed on a supply path between the second hydraulic pump and the second working device; a confluence valve installed on the supply path upstream of the control valve for the second working device; a first proportional control valve installed in a pilot line between the pilot pump and the confluence valve; and a controller for calculating, as electrical signals, pilot pressures applied to the control valves for first and second working devices in proportion to the operation amount of the first and second hydraulic operating levers and thus applying the operated electrical signal to the first proportional control valve.


Disclosed are a straight traveling apparatus for a construction machine and a control method thereof, which can allow a curved travel when the working device is operated during the curved travel. The straight traveling apparatus comprises a first and a second variable displacement hydraulic pump and a pilot pump; a left travel motor and a first working device that are operated by the first hydraulic pump; a plurality of switch valve that are installed in the path of the first hydraulic pump and control the hydraulic oil supplied to the left travel motor or the first working device; a right travel motor and a second working device that are operated by the second hydraulic pump; a plurality of switch valve that are installed in the path of the second hydraulic pump and control the hydraulic oil supplied to the right travel motor or the second working device; a straight travel valve that is switched by the pilot pressure applied from an electrical control valve, and supplies the hydraulic oil of one of the first and second hydraulic pumps to the left and right travel motors while supplying the hydraulic oil of the other of the first and second hydraulic pumps to the left and right working devices; a pressure detection sensor for detecting the pilot pressure applied to the left and right travel motor switch valves and the pilot pressure applied to the first and second working device switch valves; and a controller that outputs the control signal to the electrical control valve so that the pilot pressure applied to the straight travel valve is blocked in case that the difference between the pilot pressures applied to the left and right travel motor switch valves is larger than the pre-set pressure value, when the first and second working devices are operated during the travel.


Patent
Volvo | Date: 2017-09-13

The present invention relates to a braking arrangement (100, 500) comprising a brake liner (210), a backing plate (208) and an attachment member (212, 612) for interconnecting the brake liner (210) to the backing plate (208), wherein the brake liner comprises a recess (306, 506) in a surface facing the backing plate (208), wherein the backing plate (208) comprises a through hole (302, 502) associated to the recess (306, 506) of the brake liner (210); wherein the attachment member (212, 612) comprises a first portion (322) engaging said recess (306, 506) of said brake liner (210), wherein said attachment member (212, 612) further comprises a second portion (324) extending from the first portion (322) of the attachment member and forming a one-piece unit with the first portion, and in that the second portion (324) extends into the through hole (302, 502) of said backing plate (208) and engages with said backing plate (208). The present invention also relates to an attachment member and to a method for interconnecting a brake liner to a backing plate by means of an attachment member.


A method for controlling a multi-clutch transmission (200) of a vehicle (V). The method comprises the steps of: - activating said central synchronizer (70) to said first active state(d1, d2), such that the speed of a first member of a tooth clutch (22, 23, 24; 20, 21) to be engaged is synchronized with a speed of a second member of a tooth clutch (22, 23, 24; 20, 21), - attempting to engage said tooth clutch (22, 23, 24; 20, 21) to be engaged, characterised in, that if said tooth clutch (22, 23, 24; 20, 21) to be engaged is determined not to be fully engaged a predetermined period of time after an initiation of an engagement, the following steps are performed:- activating said central synchronizer (70) to said second active state (d1, d2) such that the speeds of the two members of the tooth clutch (22, 23, 24; 20, 21) to be engaged are slightly unsynchronized, and - engaging said tooth clutch (22, 23, 24; 20, 21), to be engaged.


Grant
Agency: European Commission | Branch: H2020 | Program: CSA | Phase: GV-11-2016 | Award Amount: 3.50M | Year: 2017

The FUTURE-RADAR project will support the European Technology Platform ERTRAC (the European Road Transport Research Advisory Council) and the European Green Vehicle Initiative PPP to create and implement the needed research and innovation strategies for a sustainable and competitive European road transport system. Linking all relevant stakeholders FUTURE-RADAR will provide the consensus-based plans and roadmaps addressing the key societal, environmental, economic and technological challenges in areas such as road transport safety, urban mobility, long distance freight transport, automated road transport, global competitiveness and all issues related to energy and environment. FUTURE-RADAR will also facilitate exchange between cities in Europa, Asia and Latin America on urban electric mobility solutions. The FUTURE-RADAR activities include project monitoring, strategic research agendas, international assessments and recommendations for innovation deployment as well as twinning of international projects and comprehensive dissemination and awareness activities. Overall it can be stated that FUTURE-RADAR provides the best opportunity to maintain, strengthen and widen the activities to further develop the multi-stakeholder road transport research area, for the high-quality research of societal and industrial relevance in Europe.

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