Engine arrangement

A technology of engine and engine speed, applied in engine control, combustion engine, machine/engine, etc., can solve problems such as crankshaft, engine roughness, etc., and achieve the effect of reducing torque loss
CN101450660AInactive Publication Date: 2009-06-10VOLVO CAR CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
VOLVO CAR CORP
Publication Date
2009-06-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an engine arrangement and a method for controlling the same; the engine arrangement comprising a first and a second internal combustion engine, wherein each engine comprises a crankshaft and at least one cylinder with a piston connected to said crankshaft, a controllable clutch arranged between the crankshafts, an engine control unit for controlling the first and second engine and sensors for monitoring at least one operating parameter for the said engines connected to the engine control unit. According to the invention, the relative angular position of the crankshafts of the first and second engines are controlled using a sensed crankshaft position and the ignition timing sequence of the respective first and second engines. A controllable friction clutch is used to lock up the crankshafts of the first and second engines in said at least one predetermined relative angular position.
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Description

technical field

[0001] The present invention generally relates to the control of an engine arrangement comprising first and second internal combustion engines, wherein each engine comprises a crankshaft, at least one cylinder with a piston connected to said crankshaft and a controllable cylinder arranged between said crankshafts. friction clutch. Background technique

[0002] Engine arrangements using dual displacement engines coupled to vary the number of active cylinders within a four-stroke internal combustion engine have been considered a viable solution to reducing fuel consumption in future vehicles.

[0003] US patent US 4,421,217 discloses an arrangement for connecting coaxial crankshafts to vary the number of active cylinders in an internal combustion engine. According to this arrangement, the friction clutch is operated to start and connect the crankshaft. The problem with this solution is to start the second engine by actuating a clutch driven by the first engin...

Claims

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