Fuel injection system for a saddle ride type four-wheel vehicle

• US 20050173918A1
• Filed: 02/04/2005
• Published: 08/11/2005
• Est. Priority Date: 02/06/2004
• Status: Active Grant

• Current Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Original Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Inventors: Urano, Naoki, Ito, Atsushi, Hotta, Kazuhito, Tsuruta, Yuichiro, Eguchi, Masataka
• Granted Patent: US 7,562,736 B2
• Time in Patent Office: Days
• US Class Current: 280/834
• CPC Class Codes: B62J 35/00 Fuel tanks specially adapted for motorcycles or engine-assisted cycles; Arrangements thereof fuel tanks forming part of cycle frames B62K11/00; tanks in general B60K ; closure caps for fuel tanks B60K15/0406
• CPC Class Codes: B62J 37/00 Arrangements of fuel supply lines, taps, or the like, on motor cycles or engine-assisted cycles
• CPC Class Codes: B62K 5/01 Motorcycles with four or more wheels specially adapted for disabled riders B62K5/003
• CPC Class Codes: F01N 3/34 using air conduits or jet air pumps, e.g. near the engine exhaust port
• CPC Class Codes: F02D 33/003 Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus control of electrical fuel pumps F02D41/3082, controlling fuel flow to a common rail F02D41/3845; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge
• CPC Class Codes: F02M 37/007 characterised by its use in vehicles, in stationary plants or in small engines, e.g. hand held tools
• CPC Class Codes: F02M 37/0076 Details of the fuel feeding system related to the fuel tank vehicle fuel tanks B60K15/03
• CPC Class Codes: F02M 37/103 Mounting pumps on fuel tanks
• CPC Class Codes: F02M 37/44 Filters structurally associated with pumps
• CPC Class Codes: F02M 37/46 Filters structurally associated with pressure regulators
• CPC Class Codes: F02M 39/005 Arrangements of fuel feed-pumps with respect to fuel injection apparatus F02M37/00 takes precedence
• CPC Class Codes: F02M 39/02 Arrangements of fuel-injection apparatus to facilitate the driving of pumps; Arrangements of fuel-injection pumps; Pump drives
• CPC Class Codes: Y02A 50/20 Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies

Abstract

A saddle ride type four-wheel vehicle includes an electronic control type fuel injection system in a fuel supply system for an engine mounted thereon, wherein a fuel pump is disposed on the rear side relative to the rotational center axis of front wheels and on the front side relative to the engine.

Claims

1. A saddle ride type four-wheel vehicle having an electronic control type fuel injection system in a fuel supply system for an engine mounted thereon, wherein:

a fuel pump is disposed on a rear side relative to the rotational center axis of front wheels and on a front side relative to said engine.

2. The saddle ride type four-wheel vehicle according to claim 1, further comprising a cooling fan for blowing air to said engine, wherein said fuel pump is disposed between said cooling fan and said engine.

3. The saddle ride type four-wheel vehicle according to claim 1, wherein a bottom plate of a fuel tank is roughly V-shaped in vehicle body side view.

4. The saddle ride type four-wheel vehicle according to claim 1, wherein a bottom plate of a fuel tank is roughly V-shaped in vehicle body front view.

5. The saddle ride type four-wheel vehicle according to claim 1, wherein said fuel pump, including a fuel take-out port of a fuel tank, is located in an area defined below a front extension line and a rear extension line of two fuel levels having a front-rear inclination of about 30°

.

6. The saddle ride type four-wheel vehicle according to claim 1, wherein said fuel pump, including a fuel take-out port of a fuel tank, is located in an area defined below a front extension line and a rear extension line of two fuel levels having a left-right inclination of about 15°

.

7. A saddle ride type four-wheel vehicle having an electronic control type fuel injection system in a fuel supply system for an engine mounted thereon, wherein

a fuel pump is disposed on a front side relative to said engine;

and

a throttle body is disposed on a rear side of a cylinder head of said engine.

8. The saddle ride type four-wheel vehicle according to claim 7, further comprising a cooling fan for blowing air to said engine, wherein said fuel pump is disposed between said cooling fan and said engine.

9. The saddle ride type four-wheel vehicle according to claim 7, wherein a bottom plate of a fuel tank is roughly V-shaped in vehicle body side view.

10. The saddle ride type four-wheel vehicle according to claim 7, wherein a bottom plate of a fuel tank is roughly V-shaped in vehicle body front view.

11. The saddle ride type four-wheel vehicle according to claim 7, wherein said fuel pump, including a fuel take-out port of a fuel tank, is located in an area defined below a front extension line and a rear extension line of two fuel levels having a front-rear inclination of about 30°

.

12. The saddle ride type four-wheel vehicle according to claim 7, wherein said fuel pump, including a fuel take-out port of a fuel tank, is located in an area defined below a front extension line and a rear extension line of two fuel levels having a left-right inclination of about 15°

.

13. A fuel supply system for a vehicle, comprising:

a fuel pump disposed in a fuel tank, wherein

a bottom plate of said fuel tank has a fuel sump portion comprising a step portion and a lower portion located on the lower side of said step portion, and

a fuel suction port of said fuel pump is located on the lower side relative to said step portion and at an upper surface of said lower portion so as to be located at a roughly central portion in the width direction and the front-rear direction of said fuel tank.

14. A fuel supply system for a vehicle as set forth in claim 13, wherein said fuel suction port of said fuel pump is located in at least one of a space occupied by a fuel in common at the times when said fuel tank is inclined forwards and rearward at respective expected angles and a space occupied by said fuel in common at the times when said fuel tank is inclined leftwards and rightwards at respective expected angles, wherein

the amount of the residual fuel in said fuel tank is at a predetermined reserve amount.

15. A fuel supply system for a vehicle according to claim 13, wherein said fuel sump portion is a mortar-shaped portion comprised of said lower portion and said step portion surrounding the periphery of said lower portion.

16. A fuel supply system for a vehicle as set forth in claim 13, wherein said fuel sump portion is formed at a roughly central portion in at least one of the width direction and the front-rear direction of said fuel tank.

17. A layout structure of a secondary air supply system in a vehicle comprising a fuel tank and a saddle ride type seat which are disposed at a front position and a rear position on an upper side of an engine, and a secondary air supply system for clarification of an exhaust gas, said secondary air supply system being disposed in the vicinity of a cylinder of said engine, wherein

said secondary air supply system is disposed in an above-cylinder space formed on the upper side of said engine and on the lower side of a front-side portion of said saddle ride type seat.

18. The layout structure of a secondary air supply system according to claim 17, wherein the upper side of said above-cylinder space is covered by a rear-side portion of a bottom portion of said fuel tank and a front-side portion of a bottom portion of said saddle ride type seat located on the rear side of said rear-side portion, and said rear-side portion of said bottom portion of said fuel tank is in the shape of an inclined surface inclined forwardly downward.

19. The layout structure of a secondary air supply system according to claim 17, wherein said secondary air supply system is located on the rear side of an engine-cooling fan disposed on the front side of said engine.