Abstract: A control system for controlling the speed of an internal combustion engine of a motor vehicle wherein the control system provides open loop control of the fueling rate of the engine whereby the engine fuelling rate is controlled as a function of the engine speed when the engine is free of any operator demand thereon and when the motor vehicle is moving above a predetermined vehicle speed.

Abstract: A method for controlling fuel supplied to an engine includes steps of conducting tests on a representative model of a family of engines to obtain constants and coefficients of operating characteristics of the representative engine under ambient and induced temperatures and pressures, and creating look-up maps from which such coefficients may be obtained to compute actual operating conditions. When an engine is used in performance of normal operations, sensors are provided to determine actual operating temperatures and pressures which are used to select appropriate constants and coefficients for calculating engine fuel requirements in accordance with an algorithm, and using the calculated result to control flow to fuel to the engine under normal operating conditions.

Abstract: A multi-cylinder reciprocating piston internal combustion engine, preferably operating on the two-stroke cycle, having a cylinder block 8 incorporating a bank of cylinders 10 each communicating with a crankcase 15. Each cylinder having inlet ports 20,21,22,29,30 located on each of the two opposite sides of the bank of cylinders 10, and a conduit 17 communicating at least one port on one side of the bank with at least one port on the opposite side of the bank. That conduit 17 extends through a crankshaft bearing support portion 14a of the cylinder block 8 located within said crankcase 15 below the level of the cylinders 10. There is preferably one bearing support portion 14a within the crankcase 15 and below the junction between each two adjacent cylinders 10, with a respective conduit 17 extending through said bearing support portion 14a.

Abstract: A multi cylinder two stroke cycle internal combustion engine of known construction having an individual crankcase compartment for each cylinder 11 formed in a crankcase 12, the crankcase 12 including a wall 25,25 separating two adjacent crankcase compartments. A crankshaft 13 extends through the wall 25,26 with a journal 29 thereof supported in a bearing assembly 30 has an outer bearing ring 32 non-rotatably mounted in the wall 25,26. The outer bearing ring 32 has an axial extent greater than the thickness of the wall 25,26 to provide an internal annular surface co-axial with a shoulder 36 on the crankshaft that presents an opposing external annular surface to the internal annular surface of the bearing ring 32. A fluid seal is provided between the internal and external annular surfaces to prevent the passage of gas between the crankcase cavities.

Abstract: An oil reservoir for the supply of oil to an internal combustion engine, the reservoir 50 having an upwardly open filler passage 53 to receive a neck portion 64 of an oil container 64. The reservoir filler passage 53 being closed by a wall 54 spaced inwardly from the open end thereof and an opening 56 is provided in said filler passage wall 54 located to inhibit direct communication between the filler passage 53 and the interior of the reservoir 50. The filler passage 53 is adapted to sealably engage the container neck 65 upon the container neck 65 being inserted into the filler passage 53 a pre-determined extent, and to puncture a closure wall 70 of the container neck 65 after said sealed engagement is established to permit oil to flow from the container 64 through said opening 56 in the filler passage wall 54 into the reservoir 50.