... The BQ, BQ2000 series fuel pump is designed for high-speed diesel engines with ... diameters of The BQ, BQ2000 series fuel pump is designed for high-speed diesel engines with cylinder ... 2007. BQ pump has been matched with more than 10 domestic diesel engine factories like Quchai, Changchai, Laidong, ... the pump element is 9-11mm, the cam stroke is 10-11mm, the principle of the regulator is the same as ...