| 摘要 |
<p>An advance arrangement (18) comprising an advance piston (19) slidable within a bore (20) under the action of fuel pressure within a control chamber (17), a surface (19a) associated with the piston (19) being exposed to the fuel pressure within the control chamber (17). The control chamber (17) communicates, through a restricted flow passage (23), with a low pressure fuel volume. A valve (31) is operable to vary the restriction to flow formed by the restricted flow passage (23). <IMAGE></p> |
