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:
Oct. 04, 1994
Filed:
Jan. 10, 1994
Takafumi Teramoto, Hiroshima, JP;
Kenji Morimoto, Hiroshima, JP;
Hiroyasu Uchida, Higashihiroshima, JP;
Eiji Takano, Aki, JP;
Tsutomu Fukuma, Higashihiroshima, JP;
Kazuho Douzono, Hiroshima, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
A fuel supply apparatus for use with a gaseous fuel engine is provided with an intake passage having an inlet port open to a cylinder and adapted for supplying air into the cylinder therethrough; a fuel supply device for supplying gaseous fuel into the cylinder, the fuel supply device including at least two fuel supply systems each of which is provided with fuel amount adjusting mechanism for adjusting an amount of gaseous fuel to be supplied, the fuel supply systems including high and low pressure fuel supply systems used in a high induction zone where a large amount of air is admitted into the cylinder and in a low induction zone where a small amount of air is admitted into the cylinder, the high pressure fuel supply system being constructed so that the gaseous fuel is supplied into the cylinder during a former half of a compression stroke following an air intake stroke of the engine at a pressure higher than a pressure in the cylinder through a gaseous fuel supply port open to the cylinder independently of the inlet port, and the low pressure fuel supply system being constructed so that the accuracy of adjusting the fuel amount when a fuel supply amount is small is higher than the high pressure fuel supply system; and control means for controlling actuation of the respective fuel supply systems according to an operating state of the engine.