Abstract: An engine-pressurized prestart oiler for an engine having pressure lubrication is provided, which rapidly lubricates critical engine bearing surfaces prior to the starting sequence. An accumulator for storing oil and pressurized air contains an air-oil separation float, which essentially fills the internal cross-sectional area and prevents absorption of the air. Discharge and recharge of the accumulator is preferably implemented by a normally closed solenoid valve. Discharge is controlled either manually by a switch or automatically by circuitry containing ignition-off time and accumulator pressure comparators, a starter interrupter, and a prestart oiling timer. Recharge is automatic, as the solenoid valve allows oil flow whenever the engine oil pressure sufficiently exceeds the accumulator pressure. A conduit connects the accumulator, solenoid valve, and engine, connecting to the engine either at the oil pressure sensor port or through an adaptor installed between the oil filter and the oil filter mount.

Abstract: An engine power section for piston engines, particularly V-engines, having a power unit block made of an iron material arranged in a casing of light metal. In order to achieve a stiff weight-reducing power unit block, a flange plate used for limiting the crank space as well as for the connection with the casing is arranged offset relative to a cylinder from its lower end toward its upper end with its front side surface center of gravity at a distance on this side of the bearing center plane of a crankshaft bearing, which corresponds at least to a largest possible distance of the surface center of gravity of a reinforcing profile of a bearing frame on the other side of the bearing center plane. The crankshaft bearings are connected with the flange plate by way of struts.

Abstract: The present invention relates to a connecting rod and piston assembly that comprises a cylinder and a piston, the piston comprising a head, a skirt and a support element. The piston is attached to the connecting rod by a pin, the connecting rod being mounted on the central cylindrical part of the pin. The ends of the pin are made in the shape of cylindrical segments which are coaxial to the cylindrical part of the pin and have planar surfaces parallel to the pin longitudinal axis. Fixing plates lie against the planar surfaces of the pin ends. The plates comprise openings in which threaded members pull the pin ends toward cylindrical recesses in the support element, the ends and the support element being simultaneously pulled towards the head.

Abstract: A low emission power generating apparatus which comprises a modified two-stroke diesel engine component and a modified turbocharger component which has a relatively low aspect ratio. The diesel engine component is a modification of a conventional two-stroke diesel engine design and includes a modified connecting rod assembly which causes a modified piston to accelerate rapidly within the combustion chamber and an exhaust valve cam of unique design that has a cam profile which results in a later than-normal exhaust valve opening and an earlier-than-normal valve closing so that the time during which the exhaust valve remains open is shorter than normal, thereby causing a substantially greater volume of residual gases to remain in the combustion chamber following the scavenge stroke. This increase in the volume of the residual exhaust gases within the chamber leads to an increase in compression temperature and effectively increases the compression ratio and consequently the compression pressure.

Abstract: A low emission power generating apparatus which comprises a modified two-stroke diesel engine component and a modified turbocharger component which has a relatively low aspect ratio. The diesel engine component is a modification of a conventional two-stroke diesel engine design and includes an exhaust valve cam of unique design that has a cam profile which results in a later than-normal exhaust valve opening and an earlier-than-normal valve closing so that the time during which the exhaust valve remains open is shorter than normal, thereby causing a substantially greater volume of residual gases to remain in the combustion chamber following the scavenge stroke. This increase in the volume of the residual exhaust gases within the chamber leads to an increase in compression temperature and effectively increases the compression ratio and consequently the compression pressure.

Abstract: A method of controlling the oil flow rate for an internal combustion engine including: a) defining a break-in period of the engine; b) determining whether the engine is running within the break-in period; and c) varying the oil flow rate for the engine if the engine is running within said break-in period from the oil flow rate for the engine when running under normal conditions outside the break-in period such that the oil flow rate during the break-in period is generally higher than the oil flow rate under normal engine conditions.

Abstract: An exhaust passage for connecting to an exhaust port of a cylinder is provided. The exhaust passage includes a first path extending in a direction generally orthogonal to the central axis of the exhaust port. A second path connects the first path and the exhaust poil and a control valve is provided in the first path. The rotational axis of the exhaust control valve is generally parallel to the direction in which the first path extends. The surface area of an opening connecting the first path and the second path is variable as the exhaust control valve rotates, so as to carry out controlled combustion and exhaust timing. This makes it unnecessary to provide a hollow section for housing an exhaust control valve and bearing at a position close to the exhaust. It is also possible to reduce the size of a cylinder block and to realize smooth flow of exhaust gases by making the inner peripheral surface of the exhaust passage smooth.

Abstract: An engine (10) having a series of cylinders (12, 14, 16 and 18) in which pistons (30, 32, 34 and 36) are arranged for reciprocation and which are connected to a crankshaft (38). Two of the cylinders (12 and 18) operate in an Otto cycle, and water is injected through injectors (74) into the exhaust gases of those cylinders for conversion into steam which is directed to the other cylinders (14 and 16) for expansion to drive the pistons (32 and 34).

Abstract: A delivery device for fuel to an internal combustion engine, which includes a fuel reservoir. After the engine is shut off or in the event of an accident, there is the danger that the pressurized fuel present in the fuel reservoir will escape from the delivery device. A blocking device is provided on the fuel reservoir, which after the engine is shut off or after an accident, the blocking device engages with an actuation rod that is provided with detent teeth, by means of an electromagnetically actuated locking pin and thus prevents a force impingement of a compression spring on the movable wall of the fuel reservoir. By use of the blocking devices the pressure in the fuel line is completely reduced even after the escape of small fuel quantities. The delivery device is suited for mixture-compressing internal combustion engines with externally supplied ignition.

Abstract: The invention relates to an internal combustion engine, in particular a one cylinder diesel engine, with a fuel injection system. The engine is provided with a mechanical control device comprising an actuator and a control element for automatic interruption of the fuel supply in case of a lack of lubricating oil. The control circuit actuator is equipped with a vacuum advance (15) with a membrane (12) for the pressurization of a closing tappet (10), in which a pressure chamber, formed by the membrane (12) and the vacuum advance (15), is open to the atmosphere. In addition, the control conduit (18) is equipped with a connection (20) on the side of the oil circuit and a connection (22) on the side of the crankcase, in order to produce a depression the control unit.

Abstract: A lubrication system is provided, including a pressure control valve for regulating oil pressure in an internal combustion engine of a motor vehicle. An oil pump for circulating oil through the lubrication system is connected in flow communication with an engine lubrication circuit and a sump. A control valve in the oil pump is slidably movable in response to a control oil pressure. As oil pressure increases, the control valve functions to recirculate some of the oil back into the oil pump. By recirculating the oil, the control valve controls the flow of oil from the oil pump, and thereby regulating oil pressure in the lubrication system. To provide a more stable response by the control valve, the control pressure used to actuate the valve is blended from a first pressure prevailing at the outlet of said oil pump and a second pressure prevailing at or near the end of the lubrication circuit. In addition, bleed can also be incorporated into the oil pump to increase flow rate throughout the lubrication system.

Abstract: An improved method and system for automatically continuously replacing an engine's used lubricating oil with fresh lubricating oil throughout operation based on engine operating conditions is disclosed. The present system includes an injection control device for injecting small amounts of used lube oil into the engine's fuel system and an auxiliary flow control device for directing controlled quantities of fresh oil into the engine's lube oil system. An electronic controller is provided to vary the amount of used lube oil injected into the oil system based on the severity of engine operation. The process periodically determines an engine operating severity value, i.e. fuel consumption value, for an interval of engine operation and calculates a base line quantity of oil for injection based on the current fuel consumption of the engine during the current interval.

Abstract: A plurality of head bolt holes (8) is formed in the top part (4) of a cylinder block (1) of an engine at prescribed intervals about the peripheries of cylinder bores (2). Female threads (8b) are formed in the head bolt holes (8) and wall buildups (9) are formed on side walls of the cylinder block (1) around the female threads (8b) respectively. Axial tension transmission members (10) are also formed on the cylinder block side walls between the wall buildups (9) so as to interconnect adjacent wall buildups (9). The axial tension produced in the female threads upon tightening of the head bolts is transmitted not only to the vicinities of head bolt holes (8), but also to intermediate areas (12) between adjacent head bolt holes, via the wall buildups (9) and axial tension transmission members (10). Thus, the top face (5) of the cylinder block (1) is uniformly pressed against the mating bottom face of the cylinder head even if the cylinder block is made of a material with small Young's modulus such as aluminum.

Abstract: A two-stroke internal combustion engine having a compressed air assisted fuel injection system. The injection system has an accumulator that uses scavenged air from the crankcase as the compressed air source. The injection system has a valve connected to an exit from the accumulator. The valve is connected to a diaphragm with two diaphragm pressure chambers on opposite sides of the diaphragm. Both diaphragm pressure chambers are connected to pressure in the crankcase; one of the diaphragm pressure chambers by a flow restrictor.

Abstract: An electronically controlled lube oil and fuel blending system is provided which controls the amount of lube oil delivered from an engine lube oil supply system to an engine fuel supply system based on the amount of fuel added to the fuel supply system thereby maintaining a constant lube oil/fuel ratio or lube oil concentration in the fuel supply system 16 regardless of variations in engine operation thereby minimizing emissions, such as particulate matter. The system includes a lube oil injection circuit connecting the engine lube oil supply system to the fuel supply system and an emission compliance lube oil concentration control system for controlling a lube oil concentration in the fuel supply system to maintain compliant engine emissions during engine operation.

Abstract: A cylinder block for a multi-cylinder internal combustion engine with a multi-bearing crankshaft and a water jacket surrounding the cylinders. The outer wall of the water jacket extends downwards approximately into a parting plane of the crankshaft bearings. A base frame rests against and is connected to a contact surface formed by a circumferential free edge of the water jacket outer wall. The crankshaft bearings are arranged on the base frame and detachable bearing caps are arranged and fastened by screws on the side of the base frame facing the cylinders.

Abstract: A cooling fan system includes an engine driven mechanical fan and an electrically driven fan. The mechanical fan and the electrical fans are placed in series within a common shroud that directs air between them. In one application, the electrical fan generates an axially directed air flow and the mechanical fan produces a radially directed air flow. The electrical fan is rotated counter to the mechanical fan.

Abstract: An engine generator includes an engine having an intake device and an exhaust device which are connected to an engine body, a generator connected to the engine, and a fuel tank for supplying fuel to the engine. The engine, the generator and the fuel tank are mounted on a frame. In this engine generator, the intake device and the exhaust device are connected to an upper portion of the engine body having a cylinder axis extending vertically to protrude to opposite sides from the engine body, and the fuel tank is disposed sideways of the engine body and the generator below the intake device or the exhaust device. Thus, when a vertical engine is used, the fuel tank can be effectively disposed to avoid the production of a wasteful space, thereby providing reductions in size, weight and cost.

Abstract: A method of operating a two-cycle internal combustion engine under low load conditions. A throttle is placed at the intake air system to reduce air intake into the engine cylinders. A pump is placed in the exhaust system, such that it creates reduced pressure downstream of the exhaust valves. In this manner, when the air intake ports close, the exhaust is evacuated and the air trapped in the cylinder is reduced. This permits fuel to be reduced so that the engine may operate in a low load state without losing combustion.

Abstract: A device for increasing crankcase compression in an internal combustion engine. The device includes a holder having an annular peripheral wall joined to an end wall. The holder is mounted on a crankshaft of the engine, between a main bearing and a crank portion with a counterweight. The crankshaft extends through the end wall and is surrounded by the peripheral wall. Lightweight filling bodies are disposed in the holder.