Volvo Car Corporation

Ford Global Technolgoies, LLC

Petter Almhagen

Jonas Forssell

Lars Johan Stenvall

Peter Ulrik Gast

Robert Eriksson

Daniel Midholm

Andreas Eriksson

Axel Vänerhav

Tobias Stalfors

Mats Thorngren

Torbjorn Larsson

Fabian Fogelberg

Jan Muller

Peter Bengtsson

Pelle Thorson

Emil Wall

Anders Belfrage

Jonas Sjogren

Torbjörn Larsson

Linus FRANZÉN

Alexander ENGSTRÖM

Peter Gast

Lars Stenvall

A voltage supply unit for a vehicle is described, the voltage supply unit having a first output adapted to supply a first voltage to a first load and a second output adapted to supply a second voltage to a second load. The second voltage is obtained by a DC/DC converter powered by the first voltage, where the low voltage side of the DC/DC converter is connected to the second output and the high voltage side of the DC/DC converter is connected to the first output. Two different voltages can thereby be supplied by the use of one battery.

Dual voltage unit for a vehicle

A method for determining a status of a vehicle battery includes determining an initial temperature and an initial state of charge of the battery, determining a current threshold value based on the initial temperature and the initial state of charge of the battery, starting the vehicle engine, charging the battery for a predetermined charging period t, measuring two charging currents, Iand I, to the battery at two predetermined points in time during the charging period t, determining an expected current value at a time t=t+tbased on the measured charging currents, comparing the expected current value with the current threshold value, and determining the battery is faulty if the expected current value is lower than the current threshold value.

Method and apparatus for determining the status of a battery in a vehicle

An arrangement and a method are provided for improving performance of a start assist system for an internal combustion engine of a vehicle comprising: a start/stop system, a primary source of electrical energy, a secondary source of electrical energy, an electrical starter motor, an engine control unit, and additional vehicle electrical loads. A start controller is arranged such that the starter motor and engine control unit are operable with power supplied from the primary source of electrical energy at an initial cold starting attempt. If reset of the engine control unit occurs during the first cold starting attempt, the start controller is arranged such that the starter motor is operable with power supplied from the primary source of electrical energy and the engine control unit is operable with power supplied from the secondary source of electrical energy for an additional cold starting attempt.

Engine start assist system

An engine is disclosed having a flywheel arrangement comprising a starter motor () having a pinion gear () at an output shaft. The pinion gear () constantly engages a corresponding crank gear of a crank wheel () located between an engine block and a flywheel assembly () of the engine. The crank wheel () is operatively connected to a crankshaft () of the engine via a one-way clutch unit (). The flywheel assembly () comprises a first flywheel body () connected to the crankshaft () of the engine. A second flywheel body () is rotatable relative to the first flywheel body () and coupled thereto such that is able to move elastically through a limited angular distance relative to the first flywheel body (). An interlocking device includes at least one locking arrangement () and is adapted to produce an interlocking connection between the second flywheel body () and the first flywheel body () during cranking of the internal combustion engine.

Flywheel arrangement for an internal combustion engine

A starter arrangement for an internal combustion engine the arrangement including a starter motor having a pinion gear coupled to an output shaft, the pinion gear being arranged in constant engagement with a corresponding crank gear of a crank wheel located between an engine block and a flywheel of the engine. The crank wheel is operatively coupled to a crankshaft of the engine via a one-way clutch unit loosely fitted to an end of the crankshaft, the crankshaft including a circumferential slot carrying a clip ring. The one-way clutch unit including a tube shaped hub loosely fitted to an end of the crankshaft, the axial movement of the one-way hub is fixed via a clip-ring in co-operation with a first axially delimiting member and a second axially delimiting member at least partially enclosed by the hub.

Starter arrangement for an internal combustion engine

Growing community of inventors

Floda, Sweden

Petter Almhagen