Zama carburetor airflow system pdf#

Valve body 33 controls the communication between the fuel chamber 8 in the auxiliary accelerator-pump 5 and a portion of the float bowl 17 above the level of fuel, in cooperation with the partition wall 30 which serves as a valve seat. Valve body 33 has a stem 34 of smaller diameter than, and extending through, the central hole 32 and coupled to the diaphragm 27. storage means in passage way system using pumpsĪccording to the present invention, there is provided a carburetor with an auxiliary accelerator-pump system, which comprises: an intake passage including a venturi portion and a throttle valve a fuel reservoir or float bowl an auxiliary accelerator-pump including a fuel chamber and a vacuum chamber, which are separated by a spring-loaded diaphragm, the vacuum chamber being communicated with a portion of the intake passage downstream of the throttle valve, and the fuel chamber being communicated by way of a first check valve with a pump jet opening into the intake passage upstream of the venturi portion as well as by way of a second check valve to a lower portion of the fuel reservoir, which is filled with fuel, the fuel chamber being further communicated by way of a vacuum responsive valve means, with an upper portion of the fuel reservoir, which is above the level of the fuel therein, and the vacuum responsive valve means being adapted to be actuated in response to the vacuum prevailing in the intake passage downstream of the throttle valve. F02M7/08- Means for enriching charge on sudden air throttle opening, i.e.F02M7/06- Means for enriching charge on sudden air throttle opening, i.e.enriching or keeping constant, fuel/air ratio of charge under varying conditions

F02M7/00- Carburettors with means for influencing, e.g.F02M- SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF.F02- COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS.F- MECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING.Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp Application granted granted Critical Publication of US4076770A publication Critical patent/US4076770A/en Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Original Assignee Toyota Motor Corp Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US05/782,347 Inventor Haruhiko Saito Michio Morishita Current Assignee (The listed assignees may be inaccurate.

Zama carburetor airflow system pdf#

Google Patents Carburetor with auxiliary accelerator-pump systemĭownload PDF Info Publication number US4076770A US4076770A US05/782,347 US78234777A US4076770A US 4076770 A US4076770 A US 4076770A US 78234777 A US78234777 A US 78234777A US 4076770 A US4076770 A US 4076770A Authority US United States Prior art keywords fuel valve chamber carburetor vacuum Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.

Google Patents US4076770A - Carburetor with auxiliary accelerator-pump system

US4076770A - Carburetor with auxiliary accelerator-pump system