Air-fuel ratio control system having a fluid-powered broken-link

Details Air-fuel ratio control system having a fluid-powered broken-link Air-fuel ratio control system having a fluid-powered broken-link

1985-07-01

1987-02-03

Dolinar, Andrew M.

Internal-combustion engines

Engine speed regulator

Having condition responsive means with engine being part of...

123366, 123383, 123386, F02D 106

Patent

active

046402470

ABSTRACT:
The subject air-fuel ratio control system for an engine includes a fluid-powered broken-link mechanism which is operatively linked between an air-fuel ratio control device and a fuel quantity control member, such as a fuel injection pump rack. During startup of the engine, the mechanism disables the device to permit excess fuel delivery. The device is automatically activated after engine startup by the mechanism solely in combined response to the existence of engine oil pressure and a governor moving the fuel quantity control member from an excess fuel delivery position to a predetermined position referred to as an air-fuel ratio control setting. This construction minimizes the duration and quantity of any smoke produced during engine startup, simplifies the cost and construction of the air-fuel ratio control device, and permits relatively easy adjustment of the air-fuel ratio control setting.

REFERENCES:
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patent: 4343276 (1982-08-01), Jaliwala et al.
Service Manual for 3406B Diesel Truck Engine, Pub. No. SEBR0544, pp. 2-1 to 2-12, by: Caterpillar Tractor Co., published: Oct. 1984.

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