System to decrease operating jolts in a vehicle by controlling fuel and ignition timing of an internal combustion engine therein

An internal combustion engine system having

• spark generating means,
• means for furnishing a sequence of ignition timing signals each for initiating generation of a spark by said spark generating means,
• fuel supply means,
• control means connected to said fuel supply means for decreasing said fuel supply from a normal operating supply level during no-load operation of said internal combustion engine and for subsequently re-increasing said supply of said fuel back to said normal operating supply in response to loading on the engine for operation thereof under a predetermined operating condition,
• and comprising, in accordance with the invention
• means connected to said control means to decrease the jolt on the engine upon re-increase of fuel supply to a normal operating level upon loading of the engine comprising
• delay means for initiating an ignition timing delay, in response to said re-increase of fuel supply, thereby delaying at least the first of said ignition timing signals occurring after the start of said re-increasing of said fuel supply, thereby retarding said generation of said spark and decreasing the torque applied to said engine.