Other

National Research Council of Canada

Advance Engine Technology

Gary D Webster

John H Walker

Clint D Gray

Daniel L Walters

Norman J Kessens

Douglas M Bowen

Jagdish Patel

Norman J Hole

Steven L Hickman

Stuart Neill

Jim Ehrismann

David Collier

Rick Wintjes

Douglas E Campbell

L Phillip Carr

Geoffrey A Rotheram

An ignition quality tester includes an unit for repeatedly injecting a precise quantity of fuel under controlled conditions into a combustion chamber where monitored combustion can be carried out. The tester can be used in an in-line feedback arrangement to permit the continual adjustment of a refining process to maintain the cetane number at a desired value.

Air-assisted fuel injection system for ignition quality determination

A lightweight back-pack generator set having a spark-ignited engine operating on middle distillate fuels (e.g., JP-5, JP-8 and F-34) has been provided. The generator set includes a back-pack frame; an alternator; and a spark-ignited combustion engine adapted to operate on a middle distillate fuel. The engine uses a preheater for heating the intake manifold to facilitate start-up operation of the engine. The present invention also provides a simple and inexpensive method for converting a spark-ignited gasoline engine to operate on a middle distillate fuel for providing a lightweight engine suitable for driving an alternator, a portable generator, or other portable equipment.

Lightweight back-pack generator set having a spark-ignited engine

A method of measuring the instantaneous shaft velocity of a rotary machine having a shaft with a plurality of circumferentially spaced markers thereon, comprises the steps of sensing the passage of the markers with at least two circumferentially spaced sensors mounted adjacent the shaft to generate pulses in response to the passage of the markers; for each of the sensors continually deriving from the pulses and estimated spacing signals representing an estimated spacing of the markers, a set of angular velocity signals representing the instantaneous shaft angular velocity at a given point in time t.sub.i ; and varying the estimated spacing signals on an iterative basis to attempt to match the sets of angular velocity signals derived from the respective sensors. The described method allows a more accurate ICAV (Instantaneous Crankshaft Angular Velocity) waveform to be produced than was possible using prior art techniques.

Method of measuring the instantaneous shaft velocity of a rotary machine

A piston and cylinder arrangment for an internal combustion engine designed to run on diesel and similar fuels, comprises a cylinder defining a main combustion chamber, a piston reciprocatable within said cylinder and having a thermally insulating plate on its upper surface, a cylinder head including a precombustion chamber, a fuel injector for injecting fuel into said precombustion chamber, and a thermally insulated block of material with high heat retention ability surrounding the precombustion chamber to maintain a high temperature a high temperature of at least about 500.degree. C. in the precombustion chamber and thereby facilitate fuel ignition at moderate compression ratios. A mass of material with high heat retention ability is mounted on the insulated surface of the piston so as to remain at a high temperature during running of the engine and facilitate the combustion process during the downward stroke of the piston.

Two stroke diesel engine

Growing community of inventors

Ottawa, Canada

Gary D Webster