The Hydraulic Body Motion Control System (HBMC) technology was employed initially in the

Nissan Patrol The is a series of off-road vehicles and full-size SUVs manufactured by Nissan in Japan since 1951 and sold throughout the world. It is Nissan's longest running series of models. The Patrol has been available as either a short-wheelbase (SWB) ...

, and subsequently the

Infiniti QX Infiniti QX may refer to any of the following SUV models: * Infiniti QX4, mid-size luxury SUV * Infiniti QX30, subcompact luxury crossover * Infiniti QX50, compact luxury crossover * Infiniti QX60, mid-size luxury crossover * Infiniti QX70 ...

. The system was invented and developed by

Nissan Motors is a Japanese multinational automobile manufacturer headquartered in Yokohama, Kanagawa, Japan. The company sells its vehicles under the ''Nissan'' and '' Infiniti'' brands, and formerly the ''Datsun'' brand, with in-house performance tuning ...

and was tested on the

in the Middle East. The system helps reduce body lean while turning for a more comfortable ride. Utilizing hydraulic cylinders located at the shock absorbers (connected via cross piping and two accumulators), it adjusts roll stiffness by allowing transfer of fluid between the left and right sides of the vehicle through passive weight transfer during normal driving. It also helps reduce bump shock by setting bounce and roll damping forces separately. In off-road conditions, HBMC activates when it senses that a wheel has dropped. The hydraulic Body Motion Control System was first available on the new model year 2010 Nissan Patrol, a sport utility vehicle that is sold worldwide, and shares a platform with the Infiniti QX. The system was also introduced in similar form on the 2011 Infiniti QX. An earlier version of the system was installed in the

Nissan President The is a Japanese luxury car, luxury Sedan (automobile), sedan that was manufactured and marketed by Nissan from 1965 until 2010 as the flagship of Nissan's range, available only at its ''Nissan Motor Company#Japan, Nissan Store'' dealerships th ...

and

Infiniti Q45 The Infiniti Q45 is a full-size, rear-drive, five-passenger luxury sedan ( F-segment in Europe) marketed as the Core product of Infiniti, Nissan's luxury division — across three generations spanning model years 1989-2006. The first gene ...

called Full Active Suspension from 1990-2002.

System overview

Two hydraulic systems connected by cross-link hydraulic pipes to the 4-wheel independent suspension's hydraulic cylinders absorb road bumps and help reduce body lean when cornering. This helps minimize fluctuation of view of those on board and provides a more comfortable ride. Unlike other similar systems, this does not need a power source, so there is no trade-off with fuel economy.

Cornering

Fluid from the two outside wheel hydraulic cylinders flows to the accumulator to raise the suspension's roll stiffness. This counteracts centrifugal force, reducing the degree of sinking on the vehicle's outer side and helps to minimize passenger fluctuation of view.

Rough Road and Off-Road Driving

The suspension for each wheel rises or drops according to road conditions, smoothly absorbing the vibrations caused by off-road bumps and holes.

Vehicles

Models that have adopted the Hydraulic Body Motion Control Suspension System to date, listed by

model year The model year (sometimes abbreviated as MY) is a method of describing the version of a product which has been produced over multiple years. The model year may or may not be the same as the calendar year in which the product was manufactured. ...

: * 2010

* 2011

References

{{reflist Nissan