Ab Volvo Penta

Volvo Penta Ab

Per Nestvall

Christian Rodskier

Mats Hugo Dahlgren

Method and arrangement for accommodating indirect ascertainment of fill-characteristics of fluid tanks on marine vessels. The invention includes providing an experientially-based mapping of volume characteristics of a fluid tank positioned on a marine vessel that are correlated with respect to measurable fluid surface positions within the fluid tank. In consideration of this volume characteristic mapping, fluid fill condition information is output for operator use based on quantification of a parameter other than sensed fluid level in the fluid tank. While it is contemplated that the other parameter may be any characteristic that readily reads back to the volume characteristic mapping, it is particularly advantageous, and a preferred embodiment of the invention, that the other parameter be a volumetric quantification of fluid consumed out of the tank that can be compared to an earlier ascertained tank volume.

Method and arrangement for indirectly determining fill characteristics of a fluid tank on a marine vessel

A method for calibrating the injection time (&agr;) of a first fuel (,&prime;) in a diesel engine (,). The method comprises the steps of feeding adjustment fluid (,) under pressure to an injection adjuster (,) which comprises an adjuster plunger (,). The diesel engine (,) is made to run at a constant speed (r). The adjuster plunger (,), which is coupled to a roller-bearing ring (,) for adjusting the injection time (&agr;) is adjusted with the aid of the pressure of the adjustment fluid (,). The fuel consumption of the diesel engine (,) is measured and the injection time (&agr;), when the fuel consumption converts from varying to being constant and/or vice versa, is recorded. The recorded injection time (&agr;) is compared with a predetermined injection time (&agr;,) and the injection adjuster (,) is calibrated by regulating the pressure of the adjustment fluid (,) so that the adjuster plunger (,) is set in a position which corresponds to an injection time (&agr;) which accords with the predetermined injection time (&agr;,).

Method for calibration the moment of fuel injection

Device and method for calibration of a throttle arrangement

Method and a device for permitting cooling of heat-sensitive components

Drive unit for boats comprising an internal combustion engine (16) and an outboard drive (1) driven by the engine. The engine has an engine control unit (13) which holds the speed of the engine constant independently of the load on the engine. A flowmeter (15) continuously gives a signal, which represents the instantaneous fuel consumption to the engine control unit. A trim control unit (11) controls the trim angle of the drive so that the lowest fuel consumption for the set engine speed is achieved.

Method for trimming of a boat propeller drive and drive unit with means

Steering-gear

Steering system for planing watercrafts

A boat-propeller unit comprises a carrier (4), a propeller-leg (5) and a sensor (13) which senses the angle of the propeller-leg relative to the carrier and which is intended for connection to an electrical indicating instrument mounted on the instrument panel of the boat. The sensor is of the kind which produces an output signal which varies as the distance of the sensor from an object and which is located centrally of a surface (11) on the propeller-leg, the distance of which from the sensor varies with changes in the angle of the propeller-leg relative to the carrier.

Growing community of inventors

Goteborg, Sweden

Per Nestvall