Automotive vehicle fuel consumption measuring device
First Claim
1. Automotive vehicle engine fuel consumption measuring device, in which the vehicle has a multi-gear range transmission (17) comprising, in accordance with the invention, the combination ofa pressure sensing means (35) sensing pressure in the induction pipe of the engine and providing an engine pressure signal;
- an indicator (36) having a plurality of scales (42, 43,
44) which provide fuel consumption indications, each scale being specific to a specific gear range of the vehicle transmission, said indicator responding to the pressure signal so that the indication output of the pressure sensing means will indicate, directly, fuel consumption per unit distance (miles per gallon;
kilometers per liter;
liters per 100 km) in which the vehicle then operates; and
optical means (52, 53,
54) coupled to the vehicle transmission (17) and optically indicating the respective one of the scale which is associated with, and representative of, fuel consumption of the vehicle engine at the then engaged gear range.
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Accused Products
Abstract
To provide for direct indication of fuel consumption rate (miles per gallon; kilometers per liter; liter/100 km) of fuel, a manometer providing output indication of induction pipe pressure has additional scales which read, directly, in fuel consumption, the respective scales being associated with fuel consumption at a selected gear in which the vehicle is then operating. Gear range information can be obtained from a switch coupled to the gear selection lever, from comparing vehicle wheel or transmission output speed with engine speed, derived, for example, from an ignition signal; to determine fuel consumption rate under pushing or towing operation, with the throttle closed, the vehicle tachometer can have an additional scale thereon showing fuel consumption rate with throttle closed. The fuel consumption rate scale of the manometer or the tachometer, respectively, can be selectively illuminated under control of the transmission output signal.
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Citations
19 Claims
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1. Automotive vehicle engine fuel consumption measuring device, in which the vehicle has a multi-gear range transmission (17) comprising, in accordance with the invention, the combination of
a pressure sensing means (35) sensing pressure in the induction pipe of the engine and providing an engine pressure signal; -
an indicator (36) having a plurality of scales (42, 43,
44) which provide fuel consumption indications, each scale being specific to a specific gear range of the vehicle transmission, said indicator responding to the pressure signal so that the indication output of the pressure sensing means will indicate, directly, fuel consumption per unit distance (miles per gallon;
kilometers per liter;
liters per 100 km) in which the vehicle then operates; andoptical means (52, 53,
54) coupled to the vehicle transmission (17) and optically indicating the respective one of the scale which is associated with, and representative of, fuel consumption of the vehicle engine at the then engaged gear range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. Automotive vehicle engine fuel consumption measuring device, in which the vehicle has a multi-gear range transmission (17) comprising, in accordance with the invention, the combination of
a pressure sensing means (35) sensing pressure in the induction pipe of the engine and providing an engine pressure signal; -
an indicator (36) having a plurality of scales (42, 43,
44) which provide fuel consumption indications, each scale being specific to a specific gear range of the vehicle transmission, said indicator responding to the pressure signal so that the indication output of the pressure sensing means will indicate, directly, fuel consumption per unit distance (miles per gallon;
kilometers per liter;
liters per 100 km) in which the vehicle then operates; andtransmission gear sensing means (19,
40) sensing the gear range in which the vehicle then operates and providing a transmission gear range output signal. - View Dependent Claims (14, 15)
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16. Automotive vehicle engine fuel consumption measuring device, in which the vehicle has a multi-gear range transmission (17) comprising, in accordance with the invention, the combination of
a pressure sensing means (35) sensing pressure in the induction pipe of the engine and providing an engine pressure signal; -
an indicator (36) having a plurality of scales (42, 43,
44) which provide fuel consumption indications, each scale being specific to a specific gear range of the vehicle transmission, said indicator responding to the pressure signal so that the indication output of the pressure sensing means will indicate, directly, fuel consumption per unit distance (miles per gallon;
kilometers per liter;
liters per 100 km) in which the vehicle then operates; andwherein said vehicle has a tachometer or vehicle speed indicator; said tachometer includes a plurality of scales (45,
46) providing output indications directly of speed (45) and of fuel consumption rate (46), respectively, the fuel consumption rate scale indicating fuel consumption per distance (miles per gallon;
kilometers per liter;
liter/100 km) upon operation with closed engine throttle;and optical means (56) are provided, associated with the fuel consumption rate scale (46) providing output indication of fuel consumption rate on said tachometer and, respectively energizable in accordance with vehicle operation. - View Dependent Claims (17, 18, 19)
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Specification