The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 26, 1977
Filed:
Jul. 17, 1975
Robert Thomas Skinner, High Wycombe, EN;
C.A.V. Limited, Birmingham, EN;
Abstract
A liquid fuel injection pumping apparatus includes an injection pump to which fuel is supplied by a feed pump by way of a throttle which includes an axially movable member. The pressure of fuel upstream of the throttle is controlled by a valve so that its pressure varies in accordance with the law RN.sup.2. The apparatus also includes a further valve which provides a substantially constant pressure and this pressure is applied to a piston by way of a further orifice the size of which depends upon the setting of the throttle. The further piston influences the timing of injection of fuel by the apparatus and in addition a pressure which is proportional to the square of the speed at which the apparatus is driven, is generated and is also used to influence the timing of delivery of fuel.