CRV is known to use a Dual Pump System REAL TIME 4WD four-wheel drive system, which is essentially a purely mechanical timely four-wheel drive system.
1.DPSR the noun
is a known Dual Pump System REAL TIME CRV of four-wheel drive 4WD system used, it is a purely mechanical nature timely four-wheel drive system . Works
2.DPSR of
In the early days, which is the core structure of the two-pump hydraulic multi-plate clutch (different from the viscous coupling). The shaft and the propeller shaft leading to the rear axle from the front axle through the inner and outer connection multi-plate clutch, each clutch before and after the mechanical design of a hydraulic pump drive shaft coaxial with, the fluid in the hydraulic pump and a multi-sheet the clutch housing Unicom, the current rotational speed of the rear wheels is equal before and after the mechanical-hydraulic pump pressure consistent. Then multi-plate clutch in a disconnected state, and the current rotational speed of the rear wheels are different, a pressure difference arises between the two front and rear mechanical pump, when the pressure differential over three percentages, pressure will be able to compress the clutch plate, the power transmission to the rear wheels.
such a timely four-wheel drive system than a simple viscous coupling, there are some advantages in speed of response, and does not require the intervention of the electronic system, but more and more popular as compared Electronically Controlled clutch plate structure disadvantages are also apparent, not actively intervene and slow response. Therefore, since the third-generation CRV since 2007. This timely four-wheel drive system on the basis of the original increase of a one-way cam mechanism. When the current rotational speed difference generated by the pump pressure, the clutch oil pressure pressing guide, the resistance of the six resulting pellet chute is rotated along the cam groove, pushing the cam disk, and then pressing the main clutch, ON front and rear axles. This added structure is such that the response speed is further improved.