Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
  • F02N99/00—Subject matter not provided for in other groups of this subclass
  • F02N99/002—Starting combustion engines by ignition means
  • F02N99/006—Providing a combustible mixture inside the cylinder
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
  • F02N9/00—Starting of engines by supplying auxiliary pressure fluid to their working chambers
  • F02N9/02—Starting of engines by supplying auxiliary pressure fluid to their working chambers the pressure fluid being generated directly by combustion

Definitions

• the present invention relates to a method and an ar ⁇ rangement for starting a combustion engine, as set out in the prior-art portion of claims 1 and 5, respectively.
• the engine can be started without any external motor starting device conventionally provided for rotating the shaft of the in ⁇ ternal combustion engine and intended for the starting of that engine with the Otto cycle in the combustion chambers.
• the absolute majority of the internal combustion Otto cycle engines include in their set of related equipment a primary motor device which is used to rotate the shaft and the flywheel to initiate the injection and compression of the air-fuel mixture and its combustion in appropriate chambers and thus to start the action of the engine.
• a primary starter it is known to use an electric motor fed by the en ⁇ ergy from a rechargeable battery.
• DE patent publication 253 897 discloses a Diesel engine provided with an ignition device which is used at the initial phase when starting the engine, before the pressure of the air is sufficient. The engine can first be rotated by hand.
• DE patent publication 46 037 describes a method for starting an engine by opening the appropriate valve by hand after visual choice of a cylinder where the piston is in the upper position.
• DE patent publication 184 676 proposes the use of an electromechanical system of distribution and initiation of the ignition of a carburettor type engine. This is done with a solenoid controlled valve which opens the way of the air- fuel mixture to the cylinders.
• DE patent publication 260492 describes a starting method where the piston of the fuel injection pump is mechanically connected with the system providing the movement of the en- gine pistons.
• the engine is equipped with manually operated valves for fuel mixture supply to each separate cylinder.
• DE patent publication 700356 describes a starting system in which the shaft is rotated by a special electrical motor.
• the engine is equipped with explosive starting charge mounted in the cylinder cover.
• the method in accordance with the present invention can be used in any Otto cycle internal combustion engine to elim- inate the necessity of provision of any special starter-motor which initiates the process of fuel compression and combus ⁇ tion and the action of the mentioned engine by primary rotat ⁇ ing of the main shaft and/or appropriate flywheel.
• the method uses instead of a starter-motor a simple con ⁇ trol device which operates a small air-fuel injection pump and initiates the ignition spark-plug (or spark-plugs in multicylinder engine) in appropriate order to begin the nor ⁇ mal action of the engine without the necessity to use any external devices or forces prior to the beginning of the nor ⁇ mal internal combustion process in appropriate combustion chambers of the engine.
• the method has application area in modernizing of any existing appropriate equipment or any newly built internal combustion engine. It can be used for both piston and rotary-type (Wankel) engines. (In further description this will be meant but the explanation will be made for piston type multicylinder engines as an example.)
• the idea of the method is to inject the air-fuel mixture and to initiate its combustion in appropriate cylinder - namely in that one the piston of which has the position close enough to first degrees after its upper dead point.
• Next one in order for fuel injection and spark-plug ignition will be the cylinder the piston of which would have the mentioned position after the shaft and the flywheel of the engine have begun to turn.
• the further air-fuel injection and the ignition should follow as ordinary, normal procedure characteristics for a standard Otto cycle internal combustion engine.
• At least two versions of arrangement could be suggested.
• the beginning and the end of the flywheel turning operation is done fully automatically by a logical control device which controls the whole engine-starting process beginning by key turn "on" action of the operator.
• the process is supposed to be semiautomatic when the operator is informed by the flashing of an appropriate panel light that the pump action should be stopped.
• the speed of the positioning movement of the flywheel is essentially slower than even the lowest actual running speed of the en ⁇ gine.
• the arrangement in case of the Otto cycle engine which has a standard carburettor fuel supply system and a non-electronic standard ignition distributor system should include in addition to the devices mentioned above all elements needed for conversion of this engine to one having fuel injection and electronic ignition systems.
• the logical electronic device specific for this invention might be cooperated in one item with the electronic ignition system.
• Figure 1 is a schematic diagram of interacting engine systems
• Figure 2 is a schematic diagram of the version of the electrical arrange ⁇ ment for turning the flywheel into an appropriate starting position
• Figure 3 is a schematic diagram of the version of the mechanical arrangement for turning the flywheel into an appropriate starting position.
• the Otto cycle engine 1 equipped with a fuel injection system 2 and an electronic ignition system 3 is operated by a starting logical control device 4 which has a feedback electrical connection 5 with the distributor system, and which gives the signal for fuel injection and spark plug ignition in the appropriate cylinder after the starting key 6 is put in “on” position and the "permitting" connection signal comes to the control device 4 along the feedback line 5 confirming the appropriate position of the pistons in the cylinders.
• Fig. 2 gives a schematic diagram of the arrangement for electrical activation of the turning of the flywheel 10 of the engine 1 with the help of a small hydraulic motor 9 and a pump 8 driven by a small power electrical motor 7 activated by the signal from the control device 4.
• Fig. 3 illustrates a simplified mechanical version of the flywheel turning mechanism in application to the car engine arrangement operated by the pedal 12 of the hydraulic brake system which directly operates the pump 8.
• the confirmation of the needed position of the fly-wheel is given by a signal through the line 5 to the panel light 11 for operator's in ⁇ formation as a permission signal for starting of the engine.
• the injection is provided directly to the cyl- inders.
• the injection can be provided alternatively to the suction duct but the efficiency is then lower.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=8532975

Family Applications (1)

Country Status (2)

Cited By (10)

Citations (4)

• 1991
  • 1991-08-12 FI FI913816A patent/FI913816A/fi not_active Application Discontinuation
• 1992
  • 1992-08-03 WO PCT/FI1992/000225 patent/WO1993004278A1/en active Application Filing

Patent Citations (4)

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